Thanks for your further input.
bbpress and buddypress are free software offered with free support, I an just a user of bbpress who helps out here.
With just bbpress and buddypress, the twentytwenty team could not replicate your issue, I cannot replicate your issue, and now you say you are not able to replicate the issue on a brand new installation. Therefore this would suggest it is individual to your site as I said probably a template issue, not an issue with bbpress or buddypress.
you could try
and see if changing the template works