I noticed something new that started yesterday. When I post to a thread, my own posts are marked as unread. That’s a change from the way it used to be. So, now, if I post and then go to latest posts, it’ll show an unread post even if it is my own. Kind of annoying. 
That happened to me as well, just once so I didn’t bother to mention it. Then again I don’t post a ton.
Agreed. 
Just checked on some I posted today, and it’s showing them as unread.
Same is happening for me. This site is so glitchy.
I’ve had this happen a couple of times recently as well. Thought it was me!
Same for me
Thanks for flagging! I’ll check with the team to determine what’s going on and will update you.