Ticket #18232: 18232.patch

wp-includes/nav-menu-template.php

@@ -169 +169 @@
 
         // If no menu was found or if the menu has no items and no location was requested, call the fallback_cb if it exists
         if ( ( !$menu || is_wp_error($menu) || ( isset($menu_items) && empty($menu_items) && !$args->theme_location ) )
-                && $args->fallback_cb && is_callable( $args->fallback_cb ) )
+                && $args->fallback_cb && is_callable( $args->fallback_cb ) ) {
+                        if ( 'wp_page_menu' == $args->fallback_cb ) 
+                                $args->walker = '';
+
                         return call_user_func( $args->fallback_cb, (array) $args );
+        }
 
         // If no fallback function was specified and the menu doesn't exists, bail.
         if ( !$menu || is_wp_error($menu) )