Index: wp-admin/css/wp-admin.dev.css
===================================================================
--- wp-admin/css/wp-admin.dev.css	(revision 21036)
+++ wp-admin/css/wp-admin.dev.css	(working copy)
@@ -2558,6 +2558,10 @@
 	padding: 2px 8px 0 0;
 }
 
+.tablenav .actions select {
+	max-width: none;
+}
+
 .tablenav .delete {
 	margin-right: 20px;
 }