diff --git a/css/leptonContent.css b/css/leptonContent.css
index f6465054..09dabb96 100644
--- a/css/leptonContent.css
+++ b/css/leptonContent.css
@@ -3265,12 +3265,15 @@
 /** Menu - Icons Layout *******************************************************/
 @supports not -moz-bool-pref("userChrome.icon.disabled") {
   @supports -moz-bool-pref("userChrome.icon.menu") {
-    :root {
-      --uc-folder-icon: url("chrome://global/skin/icons/folder.svg");
-    }
-    @supports -moz-bool-pref("userChrome.icon.library") {
+    @-moz-document url-prefix("about:"), regexp("^(((jar:)?file:///)|(chrome://)).*/$")
+    {
       :root {
-        --uc-folder-icon: url("../icons/folder.svg");
+        --uc-folder-icon: url("chrome://global/skin/icons/folder.svg");
+      }
+      @supports -moz-bool-pref("userChrome.icon.library") {
+        :root {
+          --uc-folder-icon: url("../icons/folder.svg");
+        }
       }
     }
     @-moz-document url("chrome://browser/content/places/places.xhtml"), url("about:downloads")
@@ -7071,16 +7074,17 @@
 }
 /** Menu - Icons Layout *******************************************************/
 @media (not (-moz-bool-pref: "userChrome.icon.disabled")) and (-moz-bool-pref: "userChrome.icon.menu") {
-  :root {
-    --uc-folder-icon: url("chrome://global/skin/icons/folder.svg");
-  }
-}
-@media (not (-moz-bool-pref: "userChrome.icon.disabled")) and (-moz-bool-pref: "userChrome.icon.menu") and (-moz-bool-pref: "userChrome.icon.library") {
-  :root {
-    --uc-folder-icon: url("../icons/folder.svg");
+  @-moz-document url-prefix("about:"), regexp("^(((jar:)?file:///)|(chrome://)).*/$")
+  {
+    :root {
+      --uc-folder-icon: url("chrome://global/skin/icons/folder.svg");
+    }
+    @media (not (-moz-bool-pref: "userChrome.icon.disabled")) and (-moz-bool-pref: "userChrome.icon.menu") and (-moz-bool-pref: "userChrome.icon.library") {
+      :root {
+        --uc-folder-icon: url("../icons/folder.svg");
+      }
+    }
   }
-}
-@media (not (-moz-bool-pref: "userChrome.icon.disabled")) and (-moz-bool-pref: "userChrome.icon.menu") {
   @-moz-document url("chrome://browser/content/places/places.xhtml"), url("about:downloads")
   {
     menupopup menuitem:not([type="checkbox"][checked="true"], [type="radio"]),
@@ -7452,8 +7456,6 @@
       }
     }
   }
-}
-@media (not (-moz-bool-pref: "userChrome.icon.disabled")) and (-moz-bool-pref: "userChrome.icon.menu") {
   @-moz-document url-prefix("about:addons") {
     @media (not (-moz-bool-pref: "userChrome.icon.disabled")) and (-moz-bool-pref: "userChrome.icon.menu") and (-moz-bool-pref: "userChrome.icon.context_menu") {
       button[role="menuitem"] {
@@ -7484,8 +7486,6 @@
       }
     }
   }
-}
-@media (not (-moz-bool-pref: "userChrome.icon.disabled")) and (-moz-bool-pref: "userChrome.icon.menu") {
   @-moz-document url-prefix("about:logins") {
     @media (not (-moz-bool-pref: "userChrome.icon.disabled")) and (-moz-bool-pref: "userChrome.icon.menu") and (-moz-bool-pref: "userChrome.icon.context_menu") {
       .menuitem-export {
diff --git a/css/leptonContentESR.css b/css/leptonContentESR.css
index 52ce9250..8d41bd52 100644
--- a/css/leptonContentESR.css
+++ b/css/leptonContentESR.css
@@ -3268,12 +3268,15 @@
 /** Menu - Icons Layout *******************************************************/
 @supports not -moz-bool-pref("userChrome.icon.disabled") {
   @supports -moz-bool-pref("userChrome.icon.menu") {
-    :root {
-      --uc-folder-icon: url("chrome://global/skin/icons/folder.svg");
-    }
-    @supports -moz-bool-pref("userChrome.icon.library") {
+    @-moz-document url-prefix("about:"), regexp("^(((jar:)?file:///)|(chrome://)).*/$")
+    {
       :root {
-        --uc-folder-icon: url("../icons/folder.svg");
+        --uc-folder-icon: url("chrome://global/skin/icons/folder.svg");
+      }
+      @supports -moz-bool-pref("userChrome.icon.library") {
+        :root {
+          --uc-folder-icon: url("../icons/folder.svg");
+        }
       }
     }
     @-moz-document url("chrome://browser/content/places/places.xhtml"), url("about:downloads")
diff --git a/src/contents/_context_menu.scss b/src/contents/_context_menu.scss
index daec5c74..c505af79 100644
--- a/src/contents/_context_menu.scss
+++ b/src/contents/_context_menu.scss
@@ -1,6 +1,12 @@
 @import "../icons/shared";
-:root {
-  @include initIcons;
+
+@include moz-document(
+  url-prefix "about:",
+  regexp "^(((jar:)?file:\/\/\/)|(chrome:\/\/)).*\/$"
+) {
+  :root {
+    @include initIcons;
+  }
 }
 
 @include moz-document(