Ticket #24031: 24031.diff

wp-includes/css/admin-bar.css

@@ -13 +13 @@
         -webkit-box-sizing: content-box;
         -moz-box-sizing:    content-box;
         box-sizing:         content-box;
+        -webkit-transition: none;
+        -moz-transition: none;
+        -o-transition: none;
+        transition: none;
 }
 
 #wpadminbar ul li:before,