Strange problem with shadows on flags.

So I've tried messing around with the unused flag models in the CS:GO files, and I've added them to a map of mine. Problem is, these weird shadows are appearing on it.

Any ideas on how to fix this are appreciated!

The content cannot be displayed because it is no longer available.

Quote from Serialmapper

7 hours ago, Serialmapper said: Are you using normalmaps ? The drop shadow and selfshadowing are disabled?

I suspect a texture problem.

It doesn't have a normal map, so that's not the issue.

I couldn't find anything about self shadowing in it unlike with prop_static, but I'll keep looking around for something like this. Never heard of "Drop shadow" before.

I'm pretty sure it's a problem with the smoothing groups or something, which is why I guess it was unused.