I just remembered writing my initial observations here and well - they were wrong, I guess I shouldn't have come running here with my "findings" after one day of playing there =D
Anyways, the restarts after finished game are not always bugged, it must have been bad luck on that day. I've noticed something else though, on a more positive side of things - after a bugged restart when server can't detect players and does an automatic restart on 1h mark - well, that 2nd restart seems to be always healthy =D
Well, that's about it, scratch my last post anyway, sorry for misinformation =)