Ticket #13204: 13204.fix.tabs.1.patch

wp-admin/js/nav-menu.dev.js

@@ -251 +251 @@
                                         var activePanel,
                                         panelIdMatch = /#(.*)$/.exec(e.target.href),
                                         tabPanels,
-                                        wrapper = getParentWrapper(e.target, 'inside'),
+                                        wrapper = $(e.target).parents('.inside').first()[0],
                                         inputs = wrapper ? wrapper.getElementsByTagName('input') : [],
                                         i = inputs.length;