Recently, I've noticed some strangeness in the behavior of the "Unread Posts" button that's at the top of every forum page. For the longest time, it would show any threads I've viewed in the past, which have had new activity that I haven't seen yet. I've found that to be helpful for following those threads that are somewhat interesting but not worth subscribing to, or for checking in with the tablet without going to the computer and launching the email client to check subscribed message notifications.
A few weeks ago (I guess?) it started showing posts I know I've never visited before - posts I've never seen before, and some from forums I've never even looked into before (like the Italian and French language specific forums.)
Then, it stopped showing threads that I have seen before, but which have had recent activity. They would normally be on the list, but aren't.
Now, even the "new" tags on the recently updated threads inside a forum section (not the "Unread Posts" button list) are sometimes not showing up, even though they have been updated since my last visit.
So strange things are happening - has anyone else seen this?