Hi,
Bridge theme is also overloading Walker_Nav_Menu [1], so acf custom fields don’t display. Quick fix is to increase the order in wp_edit_nav_menu_walker, quite ugly. Bridge theme is used a lot, 7th on themeforest [2].
I think the cleanest way would be to send a commit to wordpress core developpers.
references:
[1]: bridge/includes/nav_menu/qode-menu.php
[2]: https://themeforest.net/popular_item/by_category?category=wordpress
EDIT:better fix, add this to your functions.php, or any other php file loaded by wordpress: add_filter('wp_edit_nav_menu_walker', array('acf_form_nav_menu','wp_edit_nav_menu_walker'), 11, 2);
