Since the last update, I’ve found that when I click the thread title link (or number in blue) to go to the latest (or first unread) post of a thread, it does that (I can see the correct post briefly), but after the page has finished loading I’m suddenly relocated to somewhere earlier in the thread history.
I’ve tried a Ctrl-F5 refresh to force-reload JS, but that hasn’t fixed it.
It’s also not consistent. The problem is happening often, but not always.