Generally it looks to me like you're identifying buildings in imagery and taking care to map the features you add accurately, and you're modifying features instead of deleting and re mapping them. Thank you very much for that. The footprint I flagged likely does not represent a building but rather a part of the roof of the building to its East. Consider that you are looking from above at the roofs of buildings but trying to map the footprint (which is at ground level). The footprint doesn't necessarily completely match the shape of roofs try to map what is the most likely footprint shape e.g. there could be some parts of the roof missing, or they might overhang the footprint. Sometimes the roof is corroded making it appear as a different building. I hope this helps.
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            Published using OSMCha: https://osmcha.org/changesets/169301425
            