In this longer vid you will see that one player got stuck in his animation for other players and this is a big problem.
He can move but his animation is stuck
He placed a mine but the mine did not revealed to us and there was a invisible wall
He can interact with items (placed a mine)
He can hit you (one hit killed my friend instantly)
He cant be hit (only the stucked animation)
He is invisible for all other
unknown:
he get his animation back after he put a new helmet on or leave this area 100~200m.