Stuck unread notification

Hello everyone,

I have an issue (only for myself as far as I can tell but I believe it’s possibly happening with other users) where the unread tab on the home page shows a (1), as well as in the hamburger menu. When I click on either of these it takes me to a page saying there’s no unread messages. I did a screen capture to give you an idea of what I’m seeing.

Any thoughts on what could be causing this? Only thing I’ve done different recently is turned on “Watching” for a certain category.

That looks similar to what is described here: Can't dismiss unread if last post is an assign or whisper.