This happened to me some times! When I am following an track ( mountain bike ) I can see some dirt roads marked on maps, the description of that roads are called unpaved road and is marked in white.
What happens is that I am on map following my track and I enter on same of that white marked dirt roads that are in map marked as unpaved road and that kind of road stay in front of the track I am following, than means I am no seeing If I am on track or not.
After I leave that road marked on map I can see again my purple track.
So the bug is that sometimes don´t know if is always the unpaved roads stay in front of the track we are following.
Anyone knows this bug?
Cheers