Hi Wamdai Isah Gazama,
this changeset has created a lot of errors regarding self intersecting ways:

https://tools.geofabrik.de/osmi/?view=geometry&lon=3.23730&lat=6.52943&zoom=12&baselayer=Geofabrik%20Standard&overlays=self_intersection_ways%2Cself_intersection_points%2Csingle_node_in_way%2Cduplicate_node_in_way

https://overpass-api.de/achavi/?changeset=148565718

Especially way 787313492 is affected here as you did "rectangularize" it:

https://www.openstreetmap.org/way/787313492/history

Can you please fix this?
Kind regards
Guido
