Strange walking route results

I understand there are differences in Walking vs Hiking modes, but this route is very surprising nonetheless:

Try switching to Hiking mode or moving the lower route point just a bit further to the north to see the expected route.

Is this an OSM data issue or what exactly is causing GH to suggest that I should walk 247km(!) instead of the obvious hundred meter way?

Check the OSM mapping data at
If you go into edit mode with an account you can see a lot of detail/path configuration settings. See what might be causing it and try to eliminate/identify a potential easy explanation for the issue

The hiking difficulty seems to restrict access for walking for that specific portion