All Communities View unread numbers vs what you see when you open a community. There's some disconnect here in the desktop web view. If I view all communities, and a community has the little red number indicating something I haven't seen. Then click on that community, whatever that number represented is frequently not at the top of the All Posts list. In fact often it's not obvious what it was that was unread at all.

There's something wrong here about the unread count or the all posts sort order. But I can't work out exactly what.