I've noticed my profile page does some weird ass shit (showing new messages then immediately reflecting the reality that I've marked them read, one time reflecting hundreds of unread responses to my posts which was absurd given I'd only made a couple posts and they didn't exactly set the world on fire). I imagine that is related to what you are talking about? It wasn't enough to complain about but I didn't know if it was a feature or a bug. Lol.