Please add support for Nav Menu Roles, etc

Since you have bundled menu icons into your theme, in replacing the Nav Menu admin Walker, you’ve effectively disabled any other plugin that interacts with the admin menus… such as Nav Menu Roles.

Please consider adding the following action hook:

<?php 
// Place this in your admin nav menu Walker
do_action( 'wp_nav_menu_item_custom_fields', $item_id, $item, $depth, $args );
// end added section 
?>

to your Walker (I usually recommend right below the description input) so that Nav Menu Roles (and a handful of other menu-specific plugins) can coexist with your theme.

Thanks!