AFAIAC, the "yellow folder" for new posts works OK in the "Survival forum" and in the "Around the Campfire" sections.
But not in the "Longterm" section.
Another difference : in the "Longterm" section, when opening a thread with new posts, the first (origin) post is opened. In the two other sections, it's the new post which opens.
One thing you may want to try is to go to the
My Cookies board function (use the link provided, or look at the bottom left of any forum page) and manually expire your forum cookie. Make sure to try and catch up with your forum post reading beforehand, because after you do this, everything will be marked as read.
