One thing I dislike about the new forum is when you have read a thread and press your browser’s back button (or use Safari’s swipe-to-back gesture), it goes briefly to the list of topics, then the content disappears and you get a loading spinner, then it goes to the list of topics again. Sometimes the scroll position is also messed up, so you lose track of where you were.
I wish we didn’t have this auto-refresh. I’d much rather go back to the page exactly as it was when I last saw it — I can press the refresh button myself if I want to reload it.