You have to give names to waypoints you want to be displayed in navigation panel.
See answer to no.2. Wegpunktliste & Höhenprofil - #3 by grua
See also App: Waypoint types - #55 by devemux86
The idea is, if you don’t give it a name, you aren’t interested in this waypoint.
Furthermore, waypoint names don’t change in case of a rerouting.
Manfred