Teleporting seems to occur when near a corner in a room and commonly when beds are situated in a corner. Building furniture near a wall corner (even on the outside) can cause teleporting to another room or outside.
- Teresa was building in a corner on an upper floor wall before being teleported
- Foundie studying in a corner > saved game > restarted game > Foundie now above on 1st floor
- Building a block of clothes stands: teleportation normally occurs when the 2nd stand has been completed