No on the trying it yet, but this should not be a problem as the sensor knows the state of the door and will not redo the open command if the door is already opened and vice versa. It is not a toggle back and forth system. Open is open and closed is closed which can only be executed when the door is in the opposite position.
What Tesla really needs to implement when they add back park assist with the vision only system, is to unfold the mirrors again once you clear the garage. I love the auto fold mirrors as you pull into the driveway as my garage is so tight, however on the way out, I have to manually unfold them to have proper use of the mirrors while backing out the rest of the driveway. Since the rear view mirror is so useless, that is just a bit of a hassle. Starting to simply use the backup camera, which maybe I will ultimately just become super comfortable with. Right now I just rally miss the USS functions when pulling in. To be honest, the Model Y should have come with an electronic rear view mirror. You can get these things for $130 now and it would have probably cost tesla $50 a car or less to include.