revisiting the main forum today.
Bugs Forum (Correct new Posts).
In the forum 1 unred Topic (SEO Meta Description) 4 Replies (4) Unread.
Is showning ok against that topic.
So If my thinking is right, your loosing the
on the main forum when you visit the forum even with unread topics / post to view.
Giving the impression there are no more new post, on the main forum.