That sounds like a bug in the forum's search feature. I'll look into it but there likely isn't much I can do to fix it.
Edit:
Okay, so I can confirm that it's happening which means it's not a permissions issue. Unfortunately, as a result, I'm pretty sure there isn't anything I can do about it. Hopefully this will be fixed in 2.0.
Edit:
Okay, so I can confirm that it's happening which means it's not a permissions issue. Unfortunately, as a result, I'm pretty sure there isn't anything I can do about it. Hopefully this will be fixed in 2.0.