As a quick fix, we added the following function to functions.php:
function remove_ur_filter_test(){
remove_filter(‘user_registration_before_save_profile_details’, ‘user_registration_conditional_user_meta_filter’, 10, 3);
}
add_action( ‘after_setup_theme’, ‘remove_ur_filter_test’ );
It removed the filter that was causing the issue. But please fix the issue so to don’t have to use custom code.
Thanks