Ticket #21863: 21863.patch

wp-includes/css/admin-bar.css

@@ -10 +10 @@
         font: normal 13px/28px sans-serif;
         color: #ccc;
         text-shadow: #444 0px -1px 0px;
+        -webkit-box-sizing: content-box;
+           -moz-box-sizing: content-box;
+                box-sizing: content-box;
 }
 
 #wpadminbar ul li:before,