When you set your firewall so it asks your permission when an app tries to acces network, things may go crazy.
If you immediately select "Allow" or "Block", you are fine. But if you don't, new(same) notifications keep stacking back to back, as long as you wait. 1 box per 1 seconds I guess.
So if you try to decide "should" I allow this app or now for few minutes. You'll have to keep fast-clicking allow button maybe hundreds of times so that notification disappears.
It would be cool if it doesn't stack up and if it still gona do that, it would be great if all other (same) notifications disappear after you Allowed or Blocked once.
Sample video: