Hi Harvesterify,
your recent changesets have created several errors in the OSM database regarding overlapping ways, especially several roundabouts are affected here:

https://tools.geofabrik.de/osmi/?view=routing&lon=1.38576&lat=43.50759&zoom=10&baselayer=Geofabrik%20Standard&overlays=duplicated_edges%2Cduplicated_edges%2Cduplicated_edges_areas

https://overpass-api.de/achavi/?changeset=147212824

These errors are caused by splitting roundabouts by using "osm-relatify" which is buggy. Please do not split roundabouts, keep them intact.

This kind of error irritates routing software and looks ugly on the maps. Can you please fix this?
Kind regards
Guido