BuddyPress.org

Sounds similar to a problem I ran into. I had a user create an account with the name “justin” but domain.com/members/justin redirected to a post with a slug starting with justin rather than the user profile. Not exactly the same problem, but sounds like they’re related. I’m planning on investigating this soon, but if it’s widespread hopefully Andy can check it out as well.

To solve it in the near term I just renamed the post so it didn’t start with Justin and everything worked fine, but I’m likely to encounter this again.