Ticket #30900: 30900.4.diff

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

@@ -10 +10 @@
         position: fixed;
         top: 0;
         bottom: -120px;
-        z-index: 9980; /* just beneath #adminmenuwrap */
+        z-index: 1; /* positive z-index to avoid elastic scrolling woes in Safari */
 }
 
 #adminmenu {