Backed out changeset e8a05519f047 (bug 1738265) for causing mochitest failures on test_largemenu.html. CLOSED TREE

toolkit/themes/linux/global/popup.css

@@ -16,8 +16,6 @@ panel {
   --panel-border-radius: env(-moz-gtk-menu-radius);
   --panel-border-color: ThreeDShadow;
   --panel-width: initial;
-  /* To account for the box-shadow below */
-  margin: -4px;
 }
 
 /* ::::: arrow panel ::::: */