Hi StC,
this changeset has created overlapping ways:

https://tools.geofabrik.de/osmi/?view=routing&lon=5.71078&lat=44.71795&zoom=14&baselayer=Geofabrik%20Standard&overlays=duplicated_edges

https://overpass-api.de/achavi/?changeset=150878972

I have just fixed this.
Guido
