Lighting Bug

So, after a pause of a few months I thought it's time to play some Fallen Enchantres: LH again.

Said, done. Download the game, start. And it looks strange.

Before my long pause I played it for a long time, modded some stuff and so on, but never experienced something like this.

The lighting just changes strangely after I switch to the menu and back.

I tried a few settings, but nothing helped. Mods aren't enabled. Even rechecked the files with steam, no changes.

Here is how it looks:

 EDIT: apperantly it works fine now with stylized lighting enabled.