bbPress.org

I just checked an example on my forum for comparison.

When I am logged in (not using permalinks at all):

http://www.riversideinfo.org/forum/topic.php?id=511&page&replies=1

When I am logged out:

http://www.riversideinfo.org/forum/topic.php?id=511&page#post-5973

Both work, neither is broken, they’re just different.

I checked it in this forum too (using slugs?)

Logged in:

https://bbpress.org/forums/topic/bbsync?replies=207

Logged out:

https://bbpress.org/forums/topic/bbsync