[@nesiditsa Participant 10 years, 9 months ago]

I found some hack to resolve problem with wrong calculation of position of new post in long topics.

I change false to true in line 356 of file with path /plugins/bbpress/includes/replies/functions.php.

Before changes: ‘menu_order’ => bbp_get_topic_reply_count( $topic_id, false ) + 1
After changes: ‘menu_order’ => bbp_get_topic_reply_count( $topic_id, true ) + 1

And it works for me!