diff --git a/common/gtk-3.0/3.20/gtk-dark.css b/common/gtk-3.0/3.20/gtk-dark.css
index ed65130..7dfda30 100644
--- a/common/gtk-3.0/3.20/gtk-dark.css
+++ b/common/gtk-3.0/3.20/gtk-dark.css
@@ -576,15 +576,15 @@ button {
 .linked:not(.vertical).path-bar > button + button {
   border-left-style: none; }
 
-.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover {
+.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):hover {
   box-shadow: inset 1px 0 rgba(43, 46, 57, 0.5), inset -1px 0 rgba(43, 46, 57, 0.5); }
 
-.linked:not(.vertical).path-bar button:nth-child(2):not(:active):not(:checked) {
-  box-shadow: inset 1px 0 rgba(43, 46, 57, 0.5); }
-
-.linked:not(.vertical).path-bar button:nth-last-child(2):not(:active):not(:checked) {
+.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover {
   box-shadow: inset -1px 0 rgba(43, 46, 57, 0.5); }
 
+.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover {
+  box-shadow: inset 1px 0 rgba(43, 46, 57, 0.5); }
+
 .linked.vertical > entry + entry {
   border-top-color: rgba(43, 46, 57, 0.3); }
 
@@ -1143,17 +1143,14 @@ window.csd > .titlebar:not(headerbar):backdrop {
 .primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button + button, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button + button, .primary-toolbar .linked:not(.vertical).path-bar > button + button, headerbar .linked:not(.vertical).path-bar > button + button {
   border-left-style: none; }
 
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover {
+.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):hover {
   box-shadow: inset 1px 0 rgba(21, 23, 28, 0.37), inset -1px 0 rgba(21, 23, 28, 0.37); }
 
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), .primary-toolbar .linked:not(.vertical).path-bar button:nth-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical).path-bar button:nth-child(2):not(:active):not(:checked) {
-  box-shadow: inset 1px 0 rgba(21, 23, 28, 0.37); }
-
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked), .primary-toolbar .linked:not(.vertical).path-bar button:nth-last-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical).path-bar button:nth-last-child(2):not(:active):not(:checked) {
+.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover {
   box-shadow: inset -1px 0 rgba(21, 23, 28, 0.37); }
 
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), .primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked) {
-  box-shadow: none; }
+.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover {
+  box-shadow: inset 1px 0 rgba(21, 23, 28, 0.37); }
 
 .primary-toolbar .linked:not(.vertical):not(.path-bar) > entry + entry, headerbar .linked:not(.vertical):not(.path-bar) > entry + entry {
   border-left-color: rgba(21, 23, 28, 0); }
@@ -3123,15 +3120,15 @@ popover.background label.nautilus-canvas-item.separator, headerbar .nautilus-can
 .nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button + button {
   border-left-style: none; }
 
-.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover {
+.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):hover {
   box-shadow: inset 1px 0 rgba(21, 23, 28, 0.37), inset -1px 0 rgba(21, 23, 28, 0.37); }
 
-.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) button:nth-child(2):not(:active):not(:checked) {
-  box-shadow: inset 1px 0 rgba(21, 23, 28, 0.37); }
-
-.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) button:nth-last-child(2):not(:active):not(:checked) {
+.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover {
   box-shadow: inset -1px 0 rgba(21, 23, 28, 0.37); }
 
+.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover {
+  box-shadow: inset 1px 0 rgba(21, 23, 28, 0.37); }
+
 .caja-notebook {
   border-top: 1px solid #2b2e39; }
 
diff --git a/common/gtk-3.0/3.20/gtk-darker.css b/common/gtk-3.0/3.20/gtk-darker.css
index 0b827c5..12ddb77 100644
--- a/common/gtk-3.0/3.20/gtk-darker.css
+++ b/common/gtk-3.0/3.20/gtk-darker.css
@@ -575,15 +575,15 @@ button {
 .linked:not(.vertical).path-bar > button + button {
   border-left-style: none; }
 
-.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover {
+.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):hover {
   box-shadow: inset 1px 0 rgba(207, 214, 230, 0.4), inset -1px 0 rgba(207, 214, 230, 0.4); }
 
-.linked:not(.vertical).path-bar button:nth-child(2):not(:active):not(:checked) {
-  box-shadow: inset 1px 0 rgba(207, 214, 230, 0.4); }
-
-.linked:not(.vertical).path-bar button:nth-last-child(2):not(:active):not(:checked) {
+.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover {
   box-shadow: inset -1px 0 rgba(207, 214, 230, 0.4); }
 
+.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover {
+  box-shadow: inset 1px 0 rgba(207, 214, 230, 0.4); }
+
 .linked.vertical > entry + entry {
   border-top-color: rgba(207, 214, 230, 0.3); }
 
@@ -1142,17 +1142,14 @@ window.csd > .titlebar:not(headerbar):backdrop {
 .primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button + button, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button + button, .primary-toolbar .linked:not(.vertical).path-bar > button + button, headerbar .linked:not(.vertical).path-bar > button + button {
   border-left-style: none; }
 
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover {
+.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):hover {
   box-shadow: inset 1px 0 rgba(21, 23, 28, 0.37), inset -1px 0 rgba(21, 23, 28, 0.37); }
 
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), .primary-toolbar .linked:not(.vertical).path-bar button:nth-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical).path-bar button:nth-child(2):not(:active):not(:checked) {
-  box-shadow: inset 1px 0 rgba(21, 23, 28, 0.37); }
-
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked), .primary-toolbar .linked:not(.vertical).path-bar button:nth-last-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical).path-bar button:nth-last-child(2):not(:active):not(:checked) {
+.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover {
   box-shadow: inset -1px 0 rgba(21, 23, 28, 0.37); }
 
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), .primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked) {
-  box-shadow: none; }
+.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover {
+  box-shadow: inset 1px 0 rgba(21, 23, 28, 0.37); }
 
 .primary-toolbar .linked:not(.vertical):not(.path-bar) > entry + entry, headerbar .linked:not(.vertical):not(.path-bar) > entry + entry {
   border-left-color: rgba(21, 23, 28, 0); }
@@ -3121,15 +3118,15 @@ popover.background label.nautilus-canvas-item.separator, headerbar .nautilus-can
 .nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button + button {
   border-left-style: none; }
 
-.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover {
+.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):hover {
   box-shadow: inset 1px 0 rgba(21, 23, 28, 0.37), inset -1px 0 rgba(21, 23, 28, 0.37); }
 
-.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) button:nth-child(2):not(:active):not(:checked) {
-  box-shadow: inset 1px 0 rgba(21, 23, 28, 0.37); }
-
-.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) button:nth-last-child(2):not(:active):not(:checked) {
+.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover {
   box-shadow: inset -1px 0 rgba(21, 23, 28, 0.37); }
 
+.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover {
+  box-shadow: inset 1px 0 rgba(21, 23, 28, 0.37); }
+
 .caja-notebook {
   border-top: 1px solid #dcdfe3; }
 
diff --git a/common/gtk-3.0/3.20/gtk-solid-dark.css b/common/gtk-3.0/3.20/gtk-solid-dark.css
index cd35684..0acf902 100644
--- a/common/gtk-3.0/3.20/gtk-solid-dark.css
+++ b/common/gtk-3.0/3.20/gtk-solid-dark.css
@@ -576,15 +576,15 @@ button {
 .linked:not(.vertical).path-bar > button + button {
   border-left-style: none; }
 
-.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover {
+.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):hover {
   box-shadow: inset 1px 0 rgba(43, 46, 57, 0.5), inset -1px 0 rgba(43, 46, 57, 0.5); }
 
-.linked:not(.vertical).path-bar button:nth-child(2):not(:active):not(:checked) {
-  box-shadow: inset 1px 0 rgba(43, 46, 57, 0.5); }
-
-.linked:not(.vertical).path-bar button:nth-last-child(2):not(:active):not(:checked) {
+.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover {
   box-shadow: inset -1px 0 rgba(43, 46, 57, 0.5); }
 
+.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover {
+  box-shadow: inset 1px 0 rgba(43, 46, 57, 0.5); }
+
 .linked.vertical > entry + entry {
   border-top-color: rgba(43, 46, 57, 0.3); }
 
@@ -1143,17 +1143,14 @@ window.csd > .titlebar:not(headerbar):backdrop {
 .primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button + button, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button + button, .primary-toolbar .linked:not(.vertical).path-bar > button + button, headerbar .linked:not(.vertical).path-bar > button + button {
   border-left-style: none; }
 
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover {
+.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):hover {
   box-shadow: inset 1px 0 rgba(21, 23, 28, 0.4), inset -1px 0 rgba(21, 23, 28, 0.4); }
 
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), .primary-toolbar .linked:not(.vertical).path-bar button:nth-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical).path-bar button:nth-child(2):not(:active):not(:checked) {
-  box-shadow: inset 1px 0 rgba(21, 23, 28, 0.4); }
-
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked), .primary-toolbar .linked:not(.vertical).path-bar button:nth-last-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical).path-bar button:nth-last-child(2):not(:active):not(:checked) {
+.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover {
   box-shadow: inset -1px 0 rgba(21, 23, 28, 0.4); }
 
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), .primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked) {
-  box-shadow: none; }
+.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover {
+  box-shadow: inset 1px 0 rgba(21, 23, 28, 0.4); }
 
 .primary-toolbar .linked:not(.vertical):not(.path-bar) > entry + entry, headerbar .linked:not(.vertical):not(.path-bar) > entry + entry {
   border-left-color: rgba(21, 23, 28, 0); }
@@ -3123,15 +3120,15 @@ popover.background label.nautilus-canvas-item.separator, headerbar .nautilus-can
 .nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button + button {
   border-left-style: none; }
 
-.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover {
+.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):hover {
   box-shadow: inset 1px 0 rgba(21, 23, 28, 0.4), inset -1px 0 rgba(21, 23, 28, 0.4); }
 
-.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) button:nth-child(2):not(:active):not(:checked) {
-  box-shadow: inset 1px 0 rgba(21, 23, 28, 0.4); }
-
-.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) button:nth-last-child(2):not(:active):not(:checked) {
+.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover {
   box-shadow: inset -1px 0 rgba(21, 23, 28, 0.4); }
 
+.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover {
+  box-shadow: inset 1px 0 rgba(21, 23, 28, 0.4); }
+
 .caja-notebook {
   border-top: 1px solid #2b2e39; }
 
diff --git a/common/gtk-3.0/3.20/gtk-solid-darker.css b/common/gtk-3.0/3.20/gtk-solid-darker.css
index fd98b9e..d34a185 100644
--- a/common/gtk-3.0/3.20/gtk-solid-darker.css
+++ b/common/gtk-3.0/3.20/gtk-solid-darker.css
@@ -575,15 +575,15 @@ button {
 .linked:not(.vertical).path-bar > button + button {
   border-left-style: none; }
 
-.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover {
+.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):hover {
   box-shadow: inset 1px 0 rgba(207, 214, 230, 0.4), inset -1px 0 rgba(207, 214, 230, 0.4); }
 
-.linked:not(.vertical).path-bar button:nth-child(2):not(:active):not(:checked) {
-  box-shadow: inset 1px 0 rgba(207, 214, 230, 0.4); }
-
-.linked:not(.vertical).path-bar button:nth-last-child(2):not(:active):not(:checked) {
+.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover {
   box-shadow: inset -1px 0 rgba(207, 214, 230, 0.4); }
 
+.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover {
+  box-shadow: inset 1px 0 rgba(207, 214, 230, 0.4); }
+
 .linked.vertical > entry + entry {
   border-top-color: rgba(207, 214, 230, 0.3); }
 
@@ -1142,17 +1142,14 @@ window.csd > .titlebar:not(headerbar):backdrop {
 .primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button + button, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button + button, .primary-toolbar .linked:not(.vertical).path-bar > button + button, headerbar .linked:not(.vertical).path-bar > button + button {
   border-left-style: none; }
 
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover {
+.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):hover {
   box-shadow: inset 1px 0 rgba(21, 23, 28, 0.4), inset -1px 0 rgba(21, 23, 28, 0.4); }
 
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), .primary-toolbar .linked:not(.vertical).path-bar button:nth-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical).path-bar button:nth-child(2):not(:active):not(:checked) {
-  box-shadow: inset 1px 0 rgba(21, 23, 28, 0.4); }
-
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked), .primary-toolbar .linked:not(.vertical).path-bar button:nth-last-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical).path-bar button:nth-last-child(2):not(:active):not(:checked) {
+.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover {
   box-shadow: inset -1px 0 rgba(21, 23, 28, 0.4); }
 
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), .primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked) {
-  box-shadow: none; }
+.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover {
+  box-shadow: inset 1px 0 rgba(21, 23, 28, 0.4); }
 
 .primary-toolbar .linked:not(.vertical):not(.path-bar) > entry + entry, headerbar .linked:not(.vertical):not(.path-bar) > entry + entry {
   border-left-color: rgba(21, 23, 28, 0); }
@@ -3121,15 +3118,15 @@ popover.background label.nautilus-canvas-item.separator, headerbar .nautilus-can
 .nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button + button {
   border-left-style: none; }
 
-.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover {
+.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):hover {
   box-shadow: inset 1px 0 rgba(21, 23, 28, 0.4), inset -1px 0 rgba(21, 23, 28, 0.4); }
 
-.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) button:nth-child(2):not(:active):not(:checked) {
-  box-shadow: inset 1px 0 rgba(21, 23, 28, 0.4); }
-
-.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) button:nth-last-child(2):not(:active):not(:checked) {
+.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover {
   box-shadow: inset -1px 0 rgba(21, 23, 28, 0.4); }
 
+.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover {
+  box-shadow: inset 1px 0 rgba(21, 23, 28, 0.4); }
+
 .caja-notebook {
   border-top: 1px solid #dcdfe3; }
 
diff --git a/common/gtk-3.0/3.20/gtk-solid.css b/common/gtk-3.0/3.20/gtk-solid.css
index efd1f6a..a59d257 100644
--- a/common/gtk-3.0/3.20/gtk-solid.css
+++ b/common/gtk-3.0/3.20/gtk-solid.css
@@ -575,15 +575,15 @@ button {
 .linked:not(.vertical).path-bar > button + button {
   border-left-style: none; }
 
-.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover {
+.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):hover {
   box-shadow: inset 1px 0 rgba(207, 214, 230, 0.4), inset -1px 0 rgba(207, 214, 230, 0.4); }
 
-.linked:not(.vertical).path-bar button:nth-child(2):not(:active):not(:checked) {
-  box-shadow: inset 1px 0 rgba(207, 214, 230, 0.4); }
-
-.linked:not(.vertical).path-bar button:nth-last-child(2):not(:active):not(:checked) {
+.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover {
   box-shadow: inset -1px 0 rgba(207, 214, 230, 0.4); }
 
+.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover {
+  box-shadow: inset 1px 0 rgba(207, 214, 230, 0.4); }
+
 .linked.vertical > entry + entry {
   border-top-color: rgba(207, 214, 230, 0.3); }
 
@@ -1142,17 +1142,14 @@ window.csd > .titlebar:not(headerbar):backdrop {
 .primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button + button, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button + button, .primary-toolbar .linked:not(.vertical).path-bar > button + button, headerbar .linked:not(.vertical).path-bar > button + button {
   border-left-style: none; }
 
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover {
+.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):hover {
   box-shadow: inset 1px 0 rgba(82, 93, 118, 0.1), inset -1px 0 rgba(82, 93, 118, 0.1); }
 
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), .primary-toolbar .linked:not(.vertical).path-bar button:nth-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical).path-bar button:nth-child(2):not(:active):not(:checked) {
-  box-shadow: inset 1px 0 rgba(82, 93, 118, 0.1); }
-
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked), .primary-toolbar .linked:not(.vertical).path-bar button:nth-last-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical).path-bar button:nth-last-child(2):not(:active):not(:checked) {
+.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover {
   box-shadow: inset -1px 0 rgba(82, 93, 118, 0.1); }
 
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), .primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked) {
-  box-shadow: none; }
+.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover {
+  box-shadow: inset 1px 0 rgba(82, 93, 118, 0.1); }
 
 .primary-toolbar .linked:not(.vertical):not(.path-bar) > entry + entry, headerbar .linked:not(.vertical):not(.path-bar) > entry + entry {
   border-left-color: rgba(82, 93, 118, 0); }
@@ -3125,15 +3122,15 @@ popover.background label.nautilus-canvas-item.separator, headerbar .nautilus-can
 .nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button + button {
   border-left-style: none; }
 
-.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover {
+.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):hover {
   box-shadow: inset 1px 0 rgba(82, 93, 118, 0.1), inset -1px 0 rgba(82, 93, 118, 0.1); }
 
-.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) button:nth-child(2):not(:active):not(:checked) {
-  box-shadow: inset 1px 0 rgba(82, 93, 118, 0.1); }
-
-.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) button:nth-last-child(2):not(:active):not(:checked) {
+.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover {
   box-shadow: inset -1px 0 rgba(82, 93, 118, 0.1); }
 
+.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover {
+  box-shadow: inset 1px 0 rgba(82, 93, 118, 0.1); }
+
 .caja-notebook {
   border-top: 1px solid #dcdfe3; }
 
diff --git a/common/gtk-3.0/3.20/gtk.css b/common/gtk-3.0/3.20/gtk.css
index 57f9705..6deb4d0 100644
--- a/common/gtk-3.0/3.20/gtk.css
+++ b/common/gtk-3.0/3.20/gtk.css
@@ -575,15 +575,15 @@ button {
 .linked:not(.vertical).path-bar > button + button {
   border-left-style: none; }
 
-.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover {
+.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):hover {
   box-shadow: inset 1px 0 rgba(207, 214, 230, 0.4), inset -1px 0 rgba(207, 214, 230, 0.4); }
 
-.linked:not(.vertical).path-bar button:nth-child(2):not(:active):not(:checked) {
-  box-shadow: inset 1px 0 rgba(207, 214, 230, 0.4); }
-
-.linked:not(.vertical).path-bar button:nth-last-child(2):not(:active):not(:checked) {
+.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover {
   box-shadow: inset -1px 0 rgba(207, 214, 230, 0.4); }
 
+.linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover {
+  box-shadow: inset 1px 0 rgba(207, 214, 230, 0.4); }
+
 .linked.vertical > entry + entry {
   border-top-color: rgba(207, 214, 230, 0.3); }
 
@@ -1142,17 +1142,14 @@ window.csd > .titlebar:not(headerbar):backdrop {
 .primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button + button, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button + button, .primary-toolbar .linked:not(.vertical).path-bar > button + button, headerbar .linked:not(.vertical).path-bar > button + button {
   border-left-style: none; }
 
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover {
+.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):hover {
   box-shadow: inset 1px 0 rgba(82, 93, 118, 0.1), inset -1px 0 rgba(82, 93, 118, 0.1); }
 
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), .primary-toolbar .linked:not(.vertical).path-bar button:nth-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical).path-bar button:nth-child(2):not(:active):not(:checked) {
-  box-shadow: inset 1px 0 rgba(82, 93, 118, 0.1); }
-
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked), .primary-toolbar .linked:not(.vertical).path-bar button:nth-last-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical).path-bar button:nth-last-child(2):not(:active):not(:checked) {
+.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover {
   box-shadow: inset -1px 0 rgba(82, 93, 118, 0.1); }
 
-.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-child(2):not(:active):not(:checked), .primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked), headerbar .linked:not(.vertical):not(.path-bar).stack-switcher button:nth-last-child(2):not(:active):not(:checked) {
-  box-shadow: none; }
+.primary-toolbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover, headerbar .linked:not(.vertical):not(.path-bar).stack-switcher > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover, .primary-toolbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover, headerbar .linked:not(.vertical).path-bar > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover {
+  box-shadow: inset 1px 0 rgba(82, 93, 118, 0.1); }
 
 .primary-toolbar .linked:not(.vertical):not(.path-bar) > entry + entry, headerbar .linked:not(.vertical):not(.path-bar) > entry + entry {
   border-left-color: rgba(82, 93, 118, 0); }
@@ -3125,15 +3122,15 @@ popover.background label.nautilus-canvas-item.separator, headerbar .nautilus-can
 .nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button + button {
   border-left-style: none; }
 
-.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child):hover {
+.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):hover {
   box-shadow: inset 1px 0 rgba(82, 93, 118, 0.1), inset -1px 0 rgba(82, 93, 118, 0.1); }
 
-.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) button:nth-child(2):not(:active):not(:checked) {
-  box-shadow: inset 1px 0 rgba(82, 93, 118, 0.1); }
-
-.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) button:nth-last-child(2):not(:active):not(:checked) {
+.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):first-child:hover {
   box-shadow: inset -1px 0 rgba(82, 93, 118, 0.1); }
 
+.nemo-window .primary-toolbar widget.raised.linked:not(.vertical):not(.path-bar) > button:hover:not(:checked):not(:active):not(:only-child):last-child:hover {
+  box-shadow: inset 1px 0 rgba(82, 93, 118, 0.1); }
+
 .caja-notebook {
   border-top: 1px solid #dcdfe3; }
 
diff --git a/common/gtk-3.0/3.20/sass/_common.scss b/common/gtk-3.0/3.20/sass/_common.scss
index 847c5c7..e260901 100644
--- a/common/gtk-3.0/3.20/sass/_common.scss
+++ b/common/gtk-3.0/3.20/sass/_common.scss
@@ -651,17 +651,17 @@ toolbar.inline-toolbar toolbutton {
 // special case, because path-bars are bugged
 @mixin pathbar_linking_rules($sep_color:if($variant=='light', transparentize($button_border, 0.6), transparentize($button_border, 0.5))) {
 
-    > button + button { border-left-style: none; }
+  > button + button { border-left-style: none; }
 
-    > button:hover:not(:checked):not(:active):not(:only-child):not(:first-child):not(:last-child) {
+  > button:hover:not(:checked):not(:active):not(:only-child) {
 
-      &:hover {
-        box-shadow: inset  1px 0 $sep_color,
-                    inset -1px 0 $sep_color;
-      }
+    &:hover {
+      box-shadow: inset  1px 0 $sep_color,
+                  inset -1px 0 $sep_color;
     }
-    button:nth-child(2):not(:active):not(:checked) { box-shadow: inset 1px 0 $sep_color; }
-    button:nth-last-child(2):not(:active):not(:checked) { box-shadow: inset -1px 0 $sep_color; }
+    &:first-child:hover { box-shadow: inset -1px 0 $sep_color; }
+    &:last-child:hover { box-shadow: inset 1px 0 $sep_color; }
+  }
 }
 
 // Apply the rules defined above
@@ -1244,13 +1244,8 @@ headerbar {
 
       &, &:hover, &:active, &:checked, &:disabled { @extend %linked; }
     }
-
     @include pathbar_linking_rules($sep_color:$header_button_border);
   }
-  .linked:not(.vertical):not(.path-bar).stack-switcher {
-    button:nth-child(2):not(:active):not(:checked),
-    button:nth-last-child(2):not(:active):not(:checked) { box-shadow: none; }
-  }
 
   // use linking rules for entries only
   .linked:not(.vertical):not(.path-bar) {