Learndash/focus mode integration breaks in Version 7.3.12

Hi
I use wpdiscuz with learndash lessons in focus mode. It was configured and worked correctly until the last update.

I have sfwd-lessons enabled in the custom post type in the post type form and the following code the theme functions.php

add_filter(‘learndash_focus_mode_can_view_comments’,’__return_false’);
add_action(‘learndash-focus-content-end’,function(){
if(is_user_logged_in()){
comments_template();
}
});

THE PROBLEM: after updating wpdiscuz from 7.3.11 to 7.3.12 the comment form appears duplicate on the lessons focus mode. before and after the page content. All other post types works as they should.

can you please look into it?
thank you