Tutors are logged out unnoticed during the lecture
After 2 weeks (and after restart?), the session cookie expires. If tutors logged in 2 weeks ago in their exercise, the session expires and the users will be logged out. Without refresh, tutors don't notice this.
They don't get any notifications or other informations from the tutor interface, but think they are logged in and everything is fine. This is bad and people are not happy about it.
One fix would be to set the expiredate to the next sunday night or delete the cookie on browser close.