https://bugs.freedesktop.org/show_bug.cgi?id=111591
--- Comment #11 from Shmerl shtetldik@gmail.com --- Since the game is using Unreal Engine, I wonder if developers control shaders directly, or it's something produced by UE toolchain that transpiles them from something else. I mean it could be upstream UE bug.
Just for the record, game shows it's using Unreal Engine 4.20.1-150741.