Anybody with time in a Robinson R22 has a hair trigger auto reflex.
Had the door open in flight in an ancient 22, scared the crap outa me!!
Never thought about auto though.
On climb out from a private site at 400 ft around 60 knts, the door latch worked loose ( a known fault on this particular robbie) , locked the lever and calmly closed it with left hand, flew rest of trip with my elbow on the latch to stop it vibrating up and loose!!