We upgraded to 6.5.2 (from 6.4.2). Old behavior in threaded mode was when you visited a post within a thread only that post was marked as read, not the whole thread (at least that's what I think I remember...am I wrong?) New behavior...reading a single post marks all of the posts in that thread as read. Is this a feature or a bug? If a bug, is there an easy fix?
Chuck