Just read an interview with the head of the German engine drivers' union DLG on the problems the train attendants face these days (
Link, German language).
Problems are with people not wearing masks, some having Doctor's notes (which often are fake, as you can download those from the internet, but it's hard for the attendant to tell on the spot), and some simply refusing to wear masks.
There's supposed to be added security personell to handle these, and enforce the new minimum fine of € 50,-, but there aren't enough of them, and most of the time the attendants are left alone with the problem.
Also, a lot of those people refusing to wear masks have them and put them on when they see an attendant just to take them off again once the "coast is clear", and the attendants have to deal with those and with the justified complaints of those passengers who don't want to sit around with a passenger who doesn't wear a mask.
Another problem is that the German railway company Die Bahn has not put the wearing of a mask into the list of conditions upon purchase of a ticket. Without that, the attendants don't even have legal standing to enforce the fines or kick passengers without a mask from the train at the next station. The union has been demanding this for months, but Die Bahn has so far refused to do it for whatever reason. Of course, the management is quite comfortably working from home during all this.
