This must be an old bug, but I haven't found a specific topic talking about it:
Sometimes, when checking a family tree, links that should appear between Sims to portray how they are connected, just don't show up.
For example, among the premade Sims, Lilith and Caleb Vatore show up on their family tree, and do have the sibling notification on their character sheets, but their family tree doesn't link them. I checked on different saves, and their family tree is broken on all of them, including a save I've created today.
Aside from Lilith and Caleb, I found a broken link that looks a little different in a family I played for 3 generations. I don't remember all the details so I can't even say what are supposed to be these family connections. Keaty had twins Holly and Damon, before having children with her husband (as seen on Maxime.png). When selecting one of the twins (Holly.png), Keaty's other children get disconnected from Keaty. Other siblings show up too, as if Keaty is their mother. But when selecting these other siblings (Julie.png), Keaty doesn't appear anymore. I don't know how to read this family tree. It's confusing.
Hello,
If any of you are still encountering this on the latest game version (without mods), would you be willing to share your save file(s)?
If so, please send me a private message with a link to the file. Instructions can be found here: https://forums.ea.com/idea/the-sims-4-bug-reports-en/information-how-to-send-user-files-to-the-sims-4-team/5048472
Thanks!