Ticket #19269: 19269.diff

wp-admin/css/wp-admin.dev.css

@@ -1853 +1853 @@
         margin-bottom: 1px;
 }
 
+.folded #adminmenu .wp-has-current-submenu.menu-top-last {
+        margin-bottom: 0;
+}
+
 .folded #adminmenu .wp-has-current-submenu .wp-submenu-wrap {
         margin-top: 4px;
 }