Notification center bug

My notifications seem to have a bug of some sort. So, my number of notifications is stuck at (1), but when I go check it, there are none, the number becomes (0) but comes back to (1) a moment later.  
I suspect it has something to do with an image I commented on that was later deleted.

This is known and will be fixed “soon”. Is actually notifications for images that got merged.

Oh, I see. Thank you.