It depends on the mods; it's pretty random.
Generally, those based on Pricorde vehicles are the "weirdest": some are completely broken, others aren't. It actually depends on how the mod was made, especially with what textures or materials.
Very :
ROR,
BeamNG,
FlightGear,
KSP.
:
Driver2 (on ps1)
V-Rally2 (ps1 also)
Crash Banditcoot N.Sane Trilogy (on Nintendo Switch).
NOT :
Nothing, think.
P.S: I love the nice meme.
And here is it.
It's not very good quality because the texture is oddly rotated, so putting a flag on it is more complex.
No, there are no texture issues; it's just the skin that's white in some places.
I think that'll do the trick.
Uh no sorry i don't know, but maybe you can ask to Mike to know how to fix it.
Do you know the name of the mod, to see what it originally looked like and to be able to repair it.