Just once and it loaded up eventually after a minute. Till then we were levitating and dead bodies fall down into the abyss.
There were worse bugs like when I could not shoot or run suddenly (no injury) and only way to fix it is to operate a door control.
Or that Thunder Hammer and Plasma Cannon have weird damage detection often killing randomly in area (and so are unusable).
Or that the one who host the game must not go into the inventory because the game then crash.
And stuff like that…