I've been playing this save game for a while now and have noticed that every time I load the game, my patriarch Sim's body weight changes massively. This Sim is an astronaut and is level 8 fitness so I know it's not the progressive weight gain feature, he even has the fast metabolism buff. But eventually, at some point in my gameplay, his weight triples and he's very large. In fact, he'll metamorph right before my eyes.
This Sim also has a twin brother, whose weight is large. I'm starting to think the game is confused and can't differentiate between the Sims and thus gets their body weights wrong? I honestly have no idea and it's been bothering me to no end. I only started noticing this after the recent patch.
Is anyone else having this issue? Is there any known solution?