I was subscribed to a question for having commented or already answered it, so received notifications when question/answers/comments were edited.
I received a notification and the message waiting icon turned red. I opened the “notifications” tab of my account to see what was at stake. I clicked on a yellow background item (unread notification) and I got “content no longer available”: original poster deleted his question before I could read the edit. Consequently, the notification is not read and the flag remains red.
I hoped that when the notification would scroll past the end of page, the icon would be cleared. This did not happen. All my “notifications” page has now a white background (no unread message) I still get “You have 5 new responses”. It is rather embarassing because I can no longer rely on the icon color for my traffic.
Does an old-timer on this site know how to clear the icon?