Ghost forums notifications

I keep seeing these ghost notifications on the forums.
There is a notification listed there, but when I go to check what it is, there’s no actual notification. Does anyone know why this is?

When u get a hell of notifications, but you click not on all of them…then you have this stuff…try dismiss all and it should vanish…

I’ve checked all of my other notifications though. That’s the only one I have.

strange, had the same a few moths ago, vanished after i clicked on all…