Ticket #25122: 25122.4.diff

wp-admin/js/nav-menu.js

@@ -178 +178 @@
                                                         var t = $(this),
                                                                 listItemDBIDMatch = re.exec( t.attr('name') ),
                                                                 listItemDBID = 'undefined' == typeof listItemDBIDMatch[1] ? 0 : parseInt(listItemDBIDMatch[1], 10);
+                                                        
+                                                        // Only show top level items
+                                                        if (0 !== t.closest('ul.children').length)
+                                                                return;
+                                                        
                                                         if ( this.className && -1 != this.className.indexOf('add-to-top') )
                                                                 processMethod = api.addMenuItemToTop;
                                                         menuItems[listItemDBID] = t.closest('li').getItemData( 'add-menu-item', listItemDBID );