Ticket #33925: 33925.diff

src/wp-admin/includes/nav-menu.php

@@ -202 +202 @@
                         $id = $post_type->name;
                         // Give pages a higher priority.
                         $priority = ( 'page' == $post_type->name ? 'core' : 'default' );
-                        add_meta_box( "add-{$id}", $post_type->labels->name, 'wp_nav_menu_item_post_type_meta_box', 'nav-menus', 'side', $priority, $post_type );
+                        add_meta_box( "add-post-type-{$id}", $post_type->labels->name, 'wp_nav_menu_item_post_type_meta_box', 'nav-menus', 'side', $priority, $post_type );
                 }
         }
 }