Ticket #35203: 35203.1.diff

src/wp-includes/customize/class-wp-customize-nav-menu-item-setting.php

@@ -570 +570 @@
                 /** This filter is documented in wp-includes/nav-menu.php */
                 $post->description = apply_filters( 'nav_menu_description', wp_trim_words( $post->description, 200 ) );
 
-                return $post;
+                /** This filter is documented in wp-includes/nav-menu.php */
+                return apply_filters( 'wp_setup_nav_menu_item', $post );
         }
 
         /**