Sims are immortal and won't die

When trying to kill a sim, they just won't die. I created a family in CAS and tried to kill one of the Sims by starving them, they're a male Sim and are not able to be impregnated but when their hunger got to -100, they did the granola bar animation pregnant Sims do. I also tried to kill them using the pool method, their energy got to -100 and nothing happened, as well as poor quality pufferfish, cowplant, freezing them to death, and the telescope. I also tried overexertion with an elder Sim but after 10 woohoos, they still wouldn't die.

I've done the same with multiple Sims (Bob Pancakes and Angela Pleasant as an example) and the same thing happens. None of these Sims are pregnant or immortal so this shouldn't be happening.

I've tried in multiple new save files without mods enabled, deleted cache and reset my mods folder but I still have the same issue

The only mod I have installed is MCCC, which should not affect death, I've also made sure death is enabled using the cheat in the command bar.