Topic: "Mark all as read" bug
From the main forum view click on "New posts" link for one of the forums - get the list of topics of this forum with new messages.
In the bottom right corner there is a link "Mark all topics as read". It's kind of natural to think that this link would mark read only those topics that are on this list. However what it actually does is mark all topics from all forums read.
I'm running latest release with "File based (Fancy)" URL scheme, if that matters.
P.S. Same thing happens in these forums too.