Ticket #23681: 23681.patch

wp-admin/js/nav-menu.js

@@ -930 +930 @@
                  * @param object req The request arguments.
                  */
                 addMenuItemToBottom : function( menuMarkup, req ) {
-                        $(menuMarkup).hideAdvancedMenuItemFields().appendTo( api.targetList );
+                        $( $.parseHTML( menuMarkup ) ).hideAdvancedMenuItemFields().appendTo( api.targetList );
                         api.refreshKeyboardAccessibility();
                         api.refreshAdvancedAccessibility();
                 },

wp-includes/js/wp-lists.js

@@ -208 +208 @@
                                         s.delAfter( rres, _s );
                                 }).dequeue();
                         }
-                }
+                };
 
                 $.ajax( s );
                 return false;
@@ -308 +308 @@
         },
 
         add: function( e, s ) {
-                e = $(e);
+                e = $( $.parseHTML(e)[1] ); // [0] is a text node
 
                 var list = $(this), old = false, _s = { pos: 0, id: 0, oldId: null }, ba, ref, color;