WPF MapRoute disappears when zooming in

[FrozDark]

Greetings!

When I place a long route on the map. Route gets disappeared when I zoom in too close. I think it happens when one of the point get outside of the scope of known position on the map
Long route screen

Zoom at: 16

Zoom at: 18 disappears

The longer the route the less zoom needed to get route disappeared