Product: The Sims 4
Platform:PC
Which language are you playing the game in? English
How often does the bug occur? Often (50% - 99%)
What expansions, game packs, and stuff packs do you have installed? all
Steps: How can we find the bug ourselves?
Create a new household. While in CAS, click + and from a gallery.
Select whatever sims household and click replace.
Household which you've selected in gallery will appear in CAS.
Change their traits(and name/body/etc) here. Then, place them on a lot and start playing.
What happens when the bug occurs?
Some sims still have old personality.
What do you expect to see?
https://answers.ea.com/t5/Bug-Reports/UNSUPPORTED-Changed-Trait-Wrong-Emotion/td-p/3477285/page/7
I know you(EA) decided not to fix this, but come on, is this that hard to resolve?
Technically, all you have to do is add code like this:
When the player changed Sims' personality traits[1] in CAS, and click checkmark,
-1. Is the household changed in any way? No back history, then go to 4.
0. Is the traits changed? If not, go to 3.
1. Delete all "CAS traits" from the sim in the household.
2. Assign "new traits(user selected 1~3)" to the sim in the household.
3. Save the household.
4. Show household management menu.
[1] definition: these traits = CAS traits which selectable by the user.
Have you installed any customization with the game, e.g. Custom Content or Mods? Not now. I've removed them.
Did this issue appear after a specific patch or change you made to your system? Neutral/Not Sure
by @Srothwell1