Random (but always the same) threads don’t load while everything else does. Example is the Rules and Code of Conduct doesn’t even load.
Also for the notifications at the top of the page, mainly for Unread - reading or dismissing (how to get rid of the pop up for dismissing? I want to keep them but not have to see unread right after reading) - shows on the tab. Well that number doesn’t go away even after reading/dismissing unless you do a hard refresh, as in click the button on your browser.