Cause-effect-consequence
Clearly something is out of kilter here with way too many causes (humans)
Seems like the effort needs to go into the effect-consequence area
Has the 'fix" not been employed? or is it a case that it doesn't address the effect or consequence?
By consequence I mean the safety of flight by level
My gut feeling is that they need to significantly reduce the human involvement or at least the effect which is the release of the door in flight (make it pop open on start-up etc.)