Hi all,
this changeset has also left behind a self intersecting boundary line:

https://tools.geofabrik.de/osmi/?view=geometry&lon=-114.78002&lat=50.26329&zoom=11&baselayer=Geofabrik%20Standard&overlays=self_intersection_ways%2Cself_intersection_points%2Csingle_node_in_way%2Cduplicate_node_in_way

https://overpass-api.de/achavi/?changeset=134651394

Way 427846229 is affected especially:

https://www.openstreetmap.org/way/427846229/history

Does somebody care about this error?
Guido 