Hello,
I tried to use the Codex mod and it happend several times that i get an interface problem.

In one the items on the map are not visible only the terrain.
The other one looks like this: https://imgur.com/a/4oqJpNz

It happend usually after starting the game with the mod.
When this happens its permanent and even in games without the mod. No lua errors here either.
Only way to fix it seems to be to revalidate the files.