My problem is pretty straight-forward. I've got a sim with a hat but the shadow it emits isn't displaying properly. As you can see it casts correctly on her torso but it's like a whole section of her face gets excluded from it. Does this happen to anyone else? Or could it be from a mod? I have some lighting tweaks mods, but I checked and it's not the problem.

Potentially a low graphics settings issue, if not just a quirk of the lighting engine.

Thank you for the answer. It kind of sucks, because it's a big thing for this character to be kind of mysterious and stuff, hence the necessary hat shadow.