CAS and Live Mode muscle mass do not match

After the 3rd February 2026 update my sims CAS muscle mass does not match live mode. Also, when I change the body mass in CAS this change is not reflected within live mode.

For some reason, I am only able to have the change in CAS reflected in live mode if I also change my sims hair style.

On top of this, say if I only change the hair for certain outfit categories (e.g. swimwear) then the change in muscle mass is only reflected in live mode on that particular outfit so my sim would have different body masses on each outfit category depending on which outfits hair has been changed.

I removed all mods and CC. I also repaired the Sims 4. The problem still occurs.

I am a PC player (laptop).

I have attached two photos of CAS v Live Mode.