Ticket #46611: 46611.diff

src/wp-admin/css/admin-menu.css

@@ -887 +887 @@
         }
 
         #wpadminbar #wp-admin-bar-menu-toggle .ab-icon:before {
-                content: "\f228";
+                content: "\f10b";
                 display: inline-block;
                 float: left;
                 font: normal 40px/45px dashicons;