I'm not sure how the notifications was intended but this seems to be some sort of bug, if not please listen to my suggestion:
Currently when you get a few notifications, and click on the respective button, the green circle with the number disappears - kinda like you've seen all notifications. Well that's true, but not true. What if I click on one of those notifications and I write a long post and forget about the other ones and only notice later and have no time to respond to any of them?
When I click on them:
Kinda like what we have with PM's, I would need to click on them individually. Obviously there would be exceptions to some, like if a post was deleted or if you bought premiums, nothing to click then.
If I've missed anything/something's wrong please post below, thanks.