And not just AirNZ. Hear a lot of doors have issues. Regulator says emergency release which disengages mechanism must be highlighted, so easy to find in emergency. Then of course the emergency release is more obvious so people use that and need maintenance to re-engage the door.
Think Air France may be on to something with curtains for it suites. Floor to ceiling and seeing magnets and claspes don't need emergency override. Plus fabric so don't rattle.