Why is this always unread?
 

https://www.linuxquestions.org/quest...op-4175732527/
That is always showing unread even after I visit and there is no more to read so is that a glitch?

I replied to that post just now. Maybe once you read my reply, you'll stop getting the "unread" notification.

Yes, now it is not showing but other one that is 0 replies is now showing like that, maybe it is system not a glitch maybe or maybe not, maybe.