Anyone know what is going on with this weird elevation?

https://preview.redd.it/ku1et3dp3ajh1.png?width=1920&format=png&auto=webp&s=6e2dfa00a0bcaf112f241f53120e6f3b1eae6c44

For some reason the floor of this room is above where the floor and door should be connecting

https://preview.redd.it/rxxhif1u3ajh1.png?width=1920&format=png&auto=webp&s=afa95e39ee88abcd5ccca3e1ff8e0ee845759379

It's even done it on the other side of the room