I have a rather new P3A and was trying out the follow me mode, when the drone took off flying backwards. I hit the RTH button and it stopped and came back but I don't know what might have caused that. I was having difficulty reading the screen on my droid phone because of glare but I kept getting some kind of warning about altitude must be between 10m-120m, so I kept raising it and hit accept. Then it turned and shot backwards like a bat outta hell. Any ideas of what might have happened? here is the video