I"ve owned my Mavic for over a year now and still not confident when I fly, it will return. Once in "Follow Me" mode I was riding my dirt bike and after about 2 minutes of following me I glanced in the bikes mirror and noticed it was flying away from me. Fortunately I was able to cancel "follow me" and gain control and returned to me. The most recent event was a month ago. While camping near Buena Vista Colorado, I was flying over a ravine with plenty of satellites connected and nothing to interfere with connection to the RC. Just as it was slightly out of my LOS it lost connection to the RC. I had my binoculars and could see it hovering in one spot for about 3 minutes in spite of the fact it is designed to return to my "home point". I tried numerous times to connect via controller. I then realized it would probably run out of battery and my best backup was to try to determine where it went down and hike down to find it. AS I continued to watch it, it starting to return to me going about 200 feet then hovering awhile. It repeated this behavior over and over, flying then stopping. As it got much closer to me , about 400 feet, the RC regained link just as the battery warning went off.
I was able to land and save it, but I must admit it makes me nervous to fly. In all of the events I have had a near loss, I always make sure of plenty of satellites, set home point, no wind and no sport mode. It appears to be a finicky little headache.