can confirm it will also do this if you are moving fast. i tested it just for shits and giggles in my work parking lot. Its not stopping the drivetrain, its turning the parking brake on at slower speeds, and activating the full brakes at higher speeds. if you open a door, and the weight sensor in it detects a large change in the "someone fell out" direction, it will stop the car as fast as possible. you cannot disable this, but if you need to back up with your door open and leaning out, just let it activate while moving slowly and then turn off the parking brake once it sets, and then it won't reactivate(but you will get a dinging warning on the dash to put in in park and stop before opening the doors). for reference, I tested this at 5mph, 20mph, and 50mph. the 50mph was done by opening the door and lifting my ass off the seat so the weight sensor thought I fell out. it fucking hurt hitting the steeringwheel that hard. would not recommend.It definitely does this as your moving slow forward or reverse.
Yes, I agree, this is annoying...I have to stick my head out the window instead. Sometimes technology can be an inconvenience.