Using Platforms causes dark lighting on part of ceiling

I've also had this occur on many occasions 😭

I want to add on to this.

I don't know if there's another bug report, but platforms also make a dark spot on higher levels depending where a room is drawn.

Here's some pictures:

only one saucer light

the room below it. The dark spot is where the wall is drawn below it.

more lights to make it better, but it's still visible