Hi! I just wanted to check if anyone is experiencing this too. I use mods, and I will test the game to see if it occurs without mods as well, just throwing this out here first.. (Testing without mods ...
I don't have a lot of behavior mods, but KawaiiStacie's Slice of Life has had a similar effect at times on my sims. So if you have that, try removing/preventing toxicity (it's under the personality menu for Slice of Life)