Dear Mr. Kitzing,
you have reported a bug on openstreetmap.org, but have a problem with the app "Komoot". There may be correlations, but in the first place you should address the complaint to Komoot. Because in your case, there is no error with us, OpenStreetMap. The described route is recorded/mapped in OSM. And it has the attribute "bicycle=designated". Komoot may not want to take the path because it is recorded as a dirt road with tracktype=grade3. Then, if possible, it would have to be set in Komoot during route planning that poorer surfaces should also be used.