I have this logical question. A lot of people on the forum advice, saying not to fly p3 close to the buildings on the metal objects, cause that can mess up the compass and cause trouble. So, now this question appears. Once when i was trying to take off from my friends balcony, the GoApp said that there is too many metal around and it won't take off. Neither in ATTI mode. (bird was on for a while right? warming up, pre flight check and etc. ). So obviously i didn't fly that day. Next day i flew a bit in a safer place, without recalibrating the compass and all was fine. So if the bird so much time was on a balcony, around that amount of metal that even application warned me about and restricted flying, didn't got a messy compass after that, why would it mess a compass by just flying next to a building that has a metal inside?