I'm going to mark this issue as solved as it's related to MCCC
Please head over to MCCC Discord/Page on updates on what to do. I personally don't use the mod and can't help you with it.
Product: The Sims 4
Platform:PC
Which language are you playing the game in? English
How often does the bug occur? Every time (100%)
What is your current game version number? Newest Version
What expansions, game packs, and stuff packs do you have installed? All of them besides the Star Wars Gameplay Pack.
Steps: How can we find the bug ourselves? Turn on aging on Long Life Span.
What happens when the bug occurs? My days for the Long Life Span are even shorter than Normal Life Span.
What do you expect to see? The actual Number of Days until aging up. Normal days to age up (Young Adult example) 96 Days until aging up with that bug : 17 Days until aging up.
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? Yes
Please describe the patch or change you made. After the Highschool Years Patch.
Everything stated above.
