A note here, just to get a data point on the thread.
Got IGLA installed. M6/stick shift car.
On maiden voyage, I pulled into a parking lot and tested M6 stall-and-restart - which worked fine, as another user told me and the installer confirmed from the factory.
Then I did a turn-off. Got a text from a friend from a bit out of town, said large hail had arrived at his place - and that I should pull my cars into garage (It's tricky but he knows I can). I am in one of my Camaros, with the other one open in the driveway. . . .
I punch in the code, and. .. nothing. Panicked, off, code, on again, then opening door etc. and repeating.
It started again when I looked it up on my phone. But was pretty scary on the spot