Edge 840 no navigation line (the pink one)

Hi all,

yesterday I faced the next issue with my 840. I was following the navigation and everything was fine. But then, in the middle of the trip, plans changed. I rerouted to a new destination, and everything was okay, but the device stopped to display the pink line. However, the maneuvers and their notifications were working. Is this a known issue? Is there anything that can be done about it, besides rebooting the device?

Thanks