Well, after a decade in which I have owned four VWs, I finally had to take the 2019 in for a warranty repair. The passenger side rear window started to go down automatically when I put it up. Took it in to the dealer this AM and it was quickly repaired by adjusting the "limit of travel" of the window. No charge under the 7 year, 84,000 mile bumper to bumper warranty that came with the car.