Notifications don't disappear after reading them
Whenever there is a new comment or answer to one of my posts, I get a notification in my notification bar. However, even though I click on it and read the content in question, the notifications don't go away.
What do I have to do so that notifications go away and I only see the new ones?
If it's of relevance, I use a set of Firefox extensions for blocking diverse things like ads, cookies, external content loaded via insecure protocols and trackers.