falling through the map, disappearing maps and ghost is strange

[teo]

me and my friend played the willow street map, in the beginning everything was fine until the door started to fall out and after a while all the doors disappeared in the house but only the entrance door was missing.
then me and my friend started to fall through the map and the map started to disappear, the spirit behaved strangely, it could not kill us. then the entrance birds disappeared disappeared and we saw space and trees through the map and when we started to return to the van my friend fell through the van, we finished the round and went to play on another map where the same thing started to happen but in a milder state. I also have a video if you need proof