after two navigation bugs and a restart during one single activity, I tried out the trackback function and got another bug. I am not sure of setting was to navigating or direct navigation. Anyway, this purple zigzag line should not be.It is even not linked to my actual position. Four bug in 30 minutes !
BTW: compared to the trackback function on a Fenix, the GPSMAP is somehow suboptimal. Why a direct line instead of a navigation for the shortest way back?