Strange and unusual building parts

[Bricktop]

This is something I've never come across before and was just wondering if anyone might know what would cause this? 

When I look at these base parts they are "normal"

- but -

When this player looks at these base parts this is his view ...

Note: His video settings are on "Very High"

http://steamcommunity.com/profiles/76561198217778555/screenshots/

[Relentless]

Weird, this looks like the door is still a blue print. Tell him to send you his ClientRPT and check whether there's something obvious.

[gernika]

fkng hippies.... 

[salival]

This is a bug with some of the models, it's pretty normal but pretty OP.

It's because he has his graphics ATOC settings set to "All trees and grass" 

Safes and other door frames for the other cinder doors do it, too