It’s good to show the wrong way intentionally here. We don’t want to confuse people that this could be a real house, with a real bathroom, so I can appreciate that they intentionally do things wrong so you could walk in, see the TP is in the wrong position, and instantly go:

“I’m in a Lego bathroom, this is not real”

And boom, no more being trapped inside the lego bathroom.

Those are the rules.