We have had this situation here in Norway too. Because of staffing problems.
Our company have been f

ing us last years...so people been quitting or moving abroad to work. (and ofcourse they stopped the education as well for 2 years..just to make things worse)
So i.e. Bodø ACC sector south("Old" Trondheim ACC) have to close some hours at night now and then.
But the "fun" will start there later this year. Like it looks now, there will probably only be 4!!??? ATCO's staffing a ACC sector on 24 hours basis.
Which means middle of Norway will be closed most of the week.
Not looking forward to the newspaper headlines.