I discovered this when trying to train a new moderator and discovered that she couldn't use her moderator functions in the forum that had been set up for that purpose.
I discovered the same problem with my test user account.
When I started playing with the moderator permissions, things got worse and even affected by Administrator functions for that training forum. I can't even edit my own posts or any other posts there.
The fact that some permissions stick and others don't tell me there is a bug somewhere.
