Going to mark this as solved cause lately all reports have been mod related.
This was happening to me for something like 5 months. I couldn't really play with my sims not being able to eat. And I had other glitches, too, but those sorted themselves out. This one stuck around.
Yesterday, I figured out (finally!) what was causing it for me.
It was one out of date mod. That's what did it. My computer is more than capable of handling the game (and had done so perfectly before this started), so I knew it wasn't that. so I searched the internet for solutions, but none of them seemed to work.
So, like the problems of Sims 3, I tried the take out all the mods you have, see if you still have the glitch, and I didn't. So I slowly started adding them in. I knew the custom content woudln't do anything with it (though I did find a few that were now glitched after a few patches and now had my sim with its top half invisible), none of them showed up, so then I started working with my script mods. And there was one that added this glitch to my game:
Adoption Enhancer.
Going to mark this as solved cause lately all reports have been mod related.
