A Notification keeps sticking

[Milo]

One notification keeps reappearing, sounds strange but even after I mark it read keeps coming back in a few minutes despite no other changes

 

[Von Callay]

I had this once and it cleared when I signed out and back in. Try that?

 

[Milo]

I had this once and it cleared when I signed out and back in. Try that?

Sorry forgot to reply, did this and cleared my cache too, back to normal