Hi Tom,
Here are the screenshots of the two map tabs. DetailMap basemap looks initially the same as the Original and the view changes when I paste the Route and Stops layers.
Edit: I added the second map from Insert Tab -> Map tool -> New map and changed the Topographic basemap to Navigation basemap.
Edit2: I'm on version 2.9.2 and just re-installed the 2.9.2 patch just in case. Installed 2.9 yesterday and patched. But I just noticed when I tried again with a fresh project that now I get directions on English, but yesterday I got them in Finnish, I have Finnish Win10, but haven't installed language pack to Pro. And I'm using Developer Professional license and ArcGIS Online NA service.