Unread Notification shows 1 when 0

Test Forum
1

The Unread notification at the top of the forum shows a number (1), but when I click on it, I am told that there are no unread topics. Seems like a small bug.

Edit: I just noticed that seems to be intermittent. At this moment, it is not showing that any posts are unread.

2

Same for me! Here is screenshot:

3

That shouldn’t happen. Does it still do that? I wonder if it’s one of the private categories confusing things.