Re: two sims setting in the same chair and other issues

For the double chair issue: Is it possible that you used MOO cheats and there are two chairs there? If you have any mods or cc, remove them from your game and test it again.

For walking through walls, check out this thread and see if it's the same issue. You can press "Me Too" if it is. https://answers.ea.com/t5/Bug-Reports/NEEDS-SAVES-Sim-walking-through-walls-and-objects-Patch-1-61/td-p/8814366

For sims coming home from school early, check out this thread: https://answers.ea.com/t5/Bug-Reports/SYMPTOM-Sims-come-home-from-work-school-early/td-p/11680922