Up to this week, the thread headers in "threads I'm on" would show up as purple if I'd read them, and blue if someone new had posted since I last read them.
This doesn't happen any more - they are purple all the time - how come?
It's no biggy but it was handy being able to see at a glance if they'd been updated since I last looked.
Can one of you nice techs make it happen again??