Cars Interior view bug

[Galyss]

Hello there,
I'm making this thread because I have a problem with a car in AC.

I wanted to make my IRL car in AC, and everything went well.
The problem I have now is a strange glitch with all the windows inside the car (Except with the windscreen and the passenger window.).
Everything was working well until recently. I don't know what happened.

Please help me ;^;

Here's a screenshot of my problem :

 

[Galyss]

up

 

[Stereo]

The actual artifacts are because of a CSP "optimization" where it doesn't redraw the sky between actual frames (and annoyingly due to a bug, if you turn this off, your screenshots will be of a blank frame half the time), but the cause is your interior windows not being set isTransparent correctly, it needs to be done for every transparent object as well as per material.