Interesting that some people think it's the real-sense system causing this. I don't have that, and it still happened to me, which would rather rule that out, wouldn't it ?
It is kinda scary isn't it ? :/
When you say 'you figured out this was caused by not having a good compass calibration', how did you come to that conclusion ?
Because I would have thought that a compass calibration is either successful or not, and the machine will tell you either way. I had a successful calibration less than a week ago when I updated the firmware, and my GPS functionality has been flawless, except for the one occasion where it wouldn't land. That makes me think CC doesn't have a lot to do with it, but not criticising - just wondering what your reasoning was...