Index: wp-admin/css/wp-admin.css
===================================================================
--- wp-admin/css/wp-admin.css	(revision 22085)
+++ wp-admin/css/wp-admin.css	(working copy)
@@ -456,7 +456,7 @@
 }
 
 .subsubsub li {
-	display: inline;
+	display: inline-block;
 	margin: 0;
 	padding: 0;
 	white-space: nowrap;