Today I had about 90 threads in the ‘New’ tab. I was reading through the ones I found interesting, scrolling down the page to review the older ones.
During this time, another thread was posted in the forum, and the top of the page got the ‘1 New thread. Click here to show.’ banner. I did not click it, but instead kept scrolling until I got to the bottom of the page. At that point, I clicked ‘Dismiss New’, partially to see what would happen, and the result was ungood: all New threads were marked to be ignored, including the one I had never seen… or at least I think so, because when the page refreshed there were no New threads at all.