Here is my take fwiw.
Having a/c on should condense humidity out of the air, hence the drain and condensate tending to form puddles under the car. Having recirc on keeps dehumidifying and recirculating as long as the a/c is actually cooling. However when the temp setting shuts off cooling, remaining humidity sitting in the a/c gets pumped out the air vents and in the winter when the glass is likely cold, the humid air just condenses on the inside of the windows.
Having recirc off at least has fresh air coming into the cabin and makes fogging less of an issue - possibly because the a/c stays in cooling mode for longer.
I have seen other EV's tending to fog up on the inside more than ICE cars. My theory on that is that to help heating work, EV's have lower levels of cabin airflow.
In cold weather I try and avoid running a/c and keep recirc off. If the car fogs up then running a/c dehimidifies but it takes some time to get remaining humidity out of the a/c system.