In many cases, as well as in ytm, the main reason may be changes in orthophotomaps, other people added buildings when there was a different orthophotomap, and when a long time passed, new orthophotomaps were added and always the orthophotomap is not evenly positioned as with the previous one, which causes the orthophotomap to show buildings that are not in an ideal position, this difference is small but visible, it is like that everywhere.