same issue. I have had to turn off aging to stop all sims aging up in a household at the same time. all my sims lifespan bars are full since the bug of the previous update. after losing quite a few sims to sudden death of sudden aging up I turned aging off altogether. after today's update i decided to see if it was truly fixed. it's not. as soon as i turned aging back on (yes i typically use long lifespan) and went into a household they all aged up at the same exact moment when they were nowhere near ready to age up prior to the update that broke the game. testing a theory the only way to possibly resolve this, but I can't verify this yet, is to revert all your sims back in CAS before you load their households. So if they are adult and will instantly become an elder, for example, when you load them, go into CAS and change them to young adult and back to adult...this will essentially start their lifespan over again as an adult. I noticed when I did this to my test household their lifespan bars were not full anymore, but I can't verify this works because I would need to restart my game to test it and I have not done so yet.