Players appearing on ceiling in custom map i'm making, how to fix?

[Solid_Spy]

Hello, I am working on a map called Neon Alleyway. And everytime I enter the map with someone in it, that person appears on the ceiling of one of the buildings.

They say they aren't really on the ceiling, even though they appear to be. They are supposed to be inside of the building, in the same x-z position. Every time they walk outside the building, their character falls off the ceiling, and the character is back to normal again.

The same thing happens with me, and other people.

I'm wondering what is causing this, and it is a real nuisance. please help! My buildings are made of 3d meshes, and I even tried separating the ceiling into a separate mesh, but that still doesn't work.

[Bawfle]

It's nothing to worry about, really c: This also happens when people enter the Flourite Plains from the Ficho portal. Most appear to be on top of the cave but really they're right outside the portal. It's because the portal is inside an object with collisions inside it. All you need to do is take off the collisions in object maker and replace the object WITH the collision with the object that DOESN'T have the collision Then people will stop landing on top of the building/ ceiling. It's all about the object collision c: