I don't remember this ever happening before 2.1, is this a new feature? In the past, any new message notification I'd get on the Watch would only include new messages and not previous read or replied messages.
This is happening to me as well - it's incredibly annoying. It's only been happening with one thread and I can't seem to shake it. Sorry I am of no help - but hopefully it is comforting to know it's not only your watch.
I don't remember this ever happening before 2.1, is this a new feature? In the past, any new message notification I'd get on the Watch would only include new messages and not previous read or replied messages.