Hi Pablo,
this changeset has created a lot of errors regarding self intersecting boundary lines:

https://tools.geofabrik.de/osmi/?view=areas&lon=-43.22718&lat=-22.89739&zoom=14&baselayer=Geofabrik%20Standard&overlays=duplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cintersection%2Cintersecting_segments%2Cways

https://overpass-api.de/achavi/?changeset=154464881

Can you please fix this?
Kind regards
Guido