UBB.threads PHP Forum Software Community Forums UBB.threads Version 7/8 Support How is this possible?

On our forum, all new users are moderated for their first four posts. After that, they are automatically added to a group that grants them access to a number of things (no moderation, they can add a signature to their profile, they can send PMs, they can view the members' profiles)

We have a new member, whose post is in moderation, and it appears that he has a signature appended to his post. Yet, when I became the member and viewed his profile, there was no signature added. I have verified that the group he is in does not have permission to have a signature.

I'm appending a screenshot so you can see what I'm referring to. You will see that in the signature area is the word Collingniceperson. I'm wondering how this is possible.