Hey man, thanks for playing my scene.
It's not actually a bug, what happens is that the hairs in this scene (and also in many scenes that use game characters, like my other ones) are actually CUAs, that is, solid objects, and not a real hair in the traditional sense. Creators usually do this kind of strategy when dealing with characters inspired by digital personas (like game characters) such that the hair perfectly matches the game appearance, since modeling actual hair to 100% resemble the game character is often harder to do during development. You can also find creators that use hair as a clothing item, too.
To fix this is quite easy, just search for atoms in the scene (remember to click "Show Hidden") named "CUA_hair..." and then you'll see the hairs for both Carlos and Jill, then just delete them from the scene.
Btw, one additional related thing: If you change the look, then the red butt cheeks will not work properly. This is because the red cheeks are clothing items, and when changing the look, it replaces also the clothing items. To fix it, you'll have to add them again. I'll add a button in the future for people that want to change the looks to make this process easier.
