Not only did my sign-in change today, but something else is weird. In the TV Forum, after I replied to post and read the other new posts, going Back to the Board, those 3 topics still showed bold (unread), no matter how many times I read them.
I didn't do anything different. The time this anomaly showed, those topics kept showing up ad bold no matter how many times I read them. Then, the next time I signed in, they were still bold, but not after I read them.