The Discuss app has the wrong ordering for the Recently Participated section so it's showing the oldest 5 replies, not the most recent. I remember fixing this myself in the past by adding an ORDER to one of the ED functions where it pulls the info from the database but I didn't document it and can't find it again. I just installed the latest ED and overwrote the old modified version
Also, the Favourites section is showing posts that are not marked as Favourites. In fact, it is showing the recent participated (replies) again.