Shuttles now check that the turf they are moving is not the baseturf. If its the baseturf, it wont move/copy that turf.
In simpler terms, if you poke a hole to the shuttle (and make space, which has a baseturf of space) that tile wont "move" with the shuttle/replace what is at the other end.
This seems rather extreme, Being on a single hole tile in the shuttle now teleports you off the shuttle. Even minor shuttle bombings will now throw vast amount of people off the shuttle.
Personally I think it would be better if holes in the shuttle would just throw you backwards, that way you can still clutch on to the remnants of the shuttle.