Ticket #38415: 38415.diff

src/wp-admin/includes/ajax-actions.php

@@ -1423 +1423 @@
                 $menu_obj = get_post( $menu_item_id );
                 if ( ! empty( $menu_obj->ID ) ) {
                         $menu_obj        = wp_setup_nav_menu_item( $menu_obj );
+                        $menu_obj->title = empty( $menu_obj->title ) ? __( 'Menu Item' ) : $menu_obj->title;
                         $menu_obj->label = $menu_obj->title; // don't show "(pending)" in ajax-added items
                         $menu_items[]    = $menu_obj;
                 }