crash during navigation when using a page with navigation data fields

Tactix 8 - 51mm solar, Software 13,73

On fenix 7 series existed a navigation page which showed up only when navigation. Unfortunately it is not  in Fenix 8 series.  I built a data page within the activities with these data fields. When switching  to this page during navigation, the watch crashes immediately. After the restart, when switching back to this page, the watch crashes again, always. 

This page includes 

Nextfork, Distance to next, time to next, next waypoint, Distance remaining, ETE, ETA.

Thanks in advance for taking care of this