Continuing the discussion from Notification count gets removed when still unread:
It appears that when you close a topic, this counts as editing the topic and that’s the notification you get.
1: Do I care that the topic has been closed by an admin? Do I want a notification as there is literally nothing I can do?
2: If a notification is triggered, it should have a padlock icon for closed, and be different to edit, as my content has not been changed.