Ideas
This is happening to me too! I currently have three teenagers in my legacy household (gen four, incase that is relevant). If I follow them all to high school, the daily tasks pop up only appears for one of them (Laurel). At the end of the school day, Laurel has the option to go home (the little house appears on her portrait and I can click it to go home like normal) but her sisters Daphne and Artemis don’t (no little house on their portraits). I can fix this temporarily by going to manage worlds and back in again. It will happen again on the next school day. If I don’t follow them to school (rabbithole mode) then they all go, but only Laurel’s portrait will be greyed out. Because Laurel’s portrait is greyed out, I can still choose her school behaviour (e.g. study hard). I don’t have any options for Daphne or Artemis besides “Leave Early”. In every other way, the game treats them like they’re at school. I get chance cards for all of them, not just Laurel. When the school day ends, they all come home, but Daphne and Artemis’ portraits both seem to think they’re still at school, even though they have physically arrived home. This seems to prevent them from attending their after school activities (when I click on “go to activity”, nothing happens). Unlike when I follow them to school, going to manage worlds and back again does NOT fix it. I do play with a few mods. I tried taking them out, but it didn’t make a difference.