Index: wp-includes/css/admin-bar.dev.css
===================================================================
--- wp-includes/css/admin-bar.dev.css	(revision 19188)
+++ wp-includes/css/admin-bar.dev.css	(working copy)
@@ -115,6 +115,7 @@
 	border-width: 0 1px 1px 1px;
 	border-style: solid;
 	border-color: #dfdfdf;
+	z-index: 1;	
 }
 
 #wpadminbar .quicklinks .opposite.menupop ul {
@@ -148,6 +149,7 @@
 	text-shadow: none;
 	white-space: nowrap;
 	min-width: 140px;
+	background-color: transparent;
 }
 
 #wpadminbar .shortlink-input {
@@ -197,6 +199,9 @@
 #wpadminbar .quicklinks .menupop a:focus span {
 	color: #333;
 	text-shadow: none;
+	background-color:  #fff;
+	z-index: 2;
+	position: relative;
 }
 
 #wpadminbar .quicklinks .menupop li:hover,