FIrst, I noticed after the forum change that while reading a thread, if I hit the back button, the page does not refresh like it used to, and the "unread reply" numbers are not updated. This isn't a big deal but I'm reporting it in case there are any other related issues. Reloading the page fixes it.
Second, today I noticed that sometimes (and I haven't narrowed down exactly when) as I am reading along and I go into a thread I'd been following previously, only the user names, avatars, and date/time show up - no message body. Reloading the page fixes this.