Comment mentions create new tickets on some departments

Comment mentions create new tickets on some departments

I'm the admin of our Desk setup and I have closed all of the notifications on 2 departments where also my account is a part of. One of them ( the logistics department) still does get notification reminder tickets when one of the agents belonging to that department does receive comment mentions. The situation on the other department ( the parts department) is more erratic and they do get tickets sometimes when mentioned in comments and then on some occasions no ticket is being created.