Ticket #29417: 29417.patch

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

@@ -84 +84 @@
                 $classes = empty( $item->classes ) ? array() : (array) $item->classes;
                 $classes[] = 'menu-item-' . $item->ID;
 
+                $args = apply_filters( 'nav_menu_item_args', $args, $item );
+
                 /**
                  * Filter the CSS class(es) applied to a menu item's <li>.
                  *