Garmin 1030 on v 5. I've also seen this same behavior on 3.9 firmware and probably previous ones as well. Load a course with elevation profile. While riding the dot indicating my present location on the elevation profile will be a ways ahead (up to 0.1 mile) ahead of where I actually am. For example, as I approach a summit, the 1030 will show my position as having crossed the summit and descending the other side, while my eyes and my other Garmin (Edge 705) will properly show that I still have a little way to climb to reach the summit. I don't recall seeing this bug on previous Edge devices I've owned, 705, 800, 810, 1000, etc. It is true that the course point distances agree with my other Garmins, so if the summit is 0.1 mi away, both devices will agree with this, it is just the position on the elevation profile it displays me that is incorrect.
