2 of the footprints are not square please press 'q' to square buildings. Many of the building footprints are innacurate. 

It is good that you wanted to avoid the highway and building footprints intersecting. Try to map roads so that the way goes roughly along the centre of the road.
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            #REVIEWED_BAD #OSMCHA
            Published using OSMCha: https://osmcha.org/changesets/136220206
            