I think I have found an issue with the route calculated by Kurviger
At first I thought “well duh, those two gates right where the markers are placed are probably to blame”. But I checked them and they’re both
access:all if I see it correctly
… as is the road in between. It’s also not offroad or in any other way limited that I see in the OSM data.
And the extra weird part is, Kurviger does not even drive inside those gates, from house to house.
So that probably speaks to the road itself having a problem, right?