That's completely right, I experienced it last night around two o'clock, I heard a click from my camper door that I know, I screamed what the hell is that right out of bed but the bird had flown, I was lucky that I heard something plus that I opened the doors I have fixed it with a steel cable and have opened it via the normal door that is electrically swallowed up in the evening, the lock is broken, but that I had connected the doors together prevented further damage.