Reply To: Replies made with Gravity Forms invisible on front end
without a deep dive into your code and gravity, we’ll need to guess at answers.
I presume you are not running any caching software?
if not then you could tie a new reply to the action on submission.
so if you have data, then the new_reply_handler in \includes\replies\functions.php starting at line 125 might be what you need.
if you have $_POST data, then it might be as simple as
add_action( 'whatever_your_actions_hook_is', 'bbp_new_reply_handler', 10 );