Current Track is not shown on map. Epix2pro 17.28

Since the Firmware Update 17.28 the current track is not shown on the map during the activity. 

All settings in in the apps for maps are set to "default system settings"

in the system setting for map the toggle for "show current track" is on (also for segments, positions etc)

It doesnt't matter if it's on or not... the current track is not shown on the map, in no app.

Afterwards i can see the track... but i also need this feature during the acitivity.

What can i do? I already restarted the watch multiple times.

best regards

Robert