Index: admin-bar.css
===================================================================
--- admin-bar.css	(revision 28886)
+++ admin-bar.css	(working copy)
@@ -105,7 +105,7 @@
    :hover states on an element that touches the extreme
    top left corner of the viewport. See #18868 */
 #wpadminbar .quicklinks {
-	border-left: 1px solid transparent;
+	/*border-left: 1px solid transparent;*/
 }
 
 #wpadminbar .quicklinks ul {