, The # of new posts isn't resetting. If a thread has "7 new posts" before I open it, it still has "7 new posts" when I close it. I just noticed this yesterday. I'm on an Android. I usually back out of threads with the back arrow. If there are many pages I click the mortarboard on the top of the page. Normally, both of those methods work to reset the number of posts. Now neither does.
Also, when I typed your ID in and selected it from the list, it bounced me back to the main menu. I had to scroll to this forum and start my message all over again. I tested it 4 or 5 times to see if it was a temporary glitch. It wasn't.