I was recently navigating a mountain bike route I had built in Trail Forks, but the route was not taking me where I had expected it to. So I decided to bail on the route and tried to navigate back to start. I selected "most direct route" and it popped up with a message "This route may take a long time to calculate. Consider adding via points." I thought that was strange, because I had ridden only a few miles at that point.
I tapped the checkmark anyway, and here's the point it took me back to:
But here's where I actually was, trying to get back to my start point:
Why did the Edge try to get me back to a point over 200 miles away? Interestingly, that is a point on another route I have saved on my Garmin. So it is confusing routes somehow.