BuddyPress.org

@tskpbls, yes I am able to replicate the issue now.
When bbPress is active, the hidden group is not visible on my-groups tabs.
bbPress not active: https://prnt.sc/skoogl
bbPress active: https://prnt.sc/skoovq
Group counting still including hidden groups, but not visible in my group’s listing.
You can report it here
buddypress.trac.wordpress.org/report

@tskpbls seems working fine to me https://prnt.sc/sklvtvm, I was able to access as super admin and group admin for a hidden group with forum enabled on that specific group.