Alexander aged up, when I wasn't playing him, with non-played aging turned off.
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? 1.62.67.1020
What expansions, game packs, and stuff packs do you have installed? CD, GTW, PH, V, OR, TLSP, LDSP, VGSP, BYSP, MHSP, PPSP
Steps: How can we find the bug ourselves? Play a family with Alexander as a friend until it's his birthday. Ignore him. Play the Goth family for a second. Save and exit to menu. Continue playing original family. When you look in your friends list he'll automatically be a teenager.
What happens when the bug occurs? Alexander ages up when he's not supposed to.
What do you expect to see? I expected him to be the same child I left off as. He didn't age up on the lot while I was there, the save game picture even has him as a child.
Have you installed any customization with the game, e.g. Custom Content or Mods? Yes
Did this issue appear after a specific patch or change you made to your system? Neutral/Not Sure
Why did this happen?
Can I reverse it?
Did he age up because I spent two seconds there (making the characters more accurate in the mirror) therefore listing the house as a "played family", therefore aging him up when I'm not even playing them?
Cause if that's the case, and it's not a bug, thats terrible game design.
You just need to change the setting to only active household aging (see pictures)
Basically what you did when you switched to him, then you made the household played and played Sims age in your game so after a while, he aged up
OR
after changing to a family make sure you mark them as unplayed again in the household manager by clicking on the plumbob picture (see second pic)