Hi Gustav, what was your unknown.geojson source for this building please (id=1255315179)? It seems out of place for all the imageries available (Bing, Mapbox
https://prnt.sc/SEIr29ltV5Ej
This is the place on Google's latest imagery: M53R+4C4 Batiafeke, Democratic Republic of the Congo
https://earth.google.com/web/search/0.6527733,+25.1910822/@0.65276602,25.19122634,430.50382152a,190.20523083d,35y,0h,0t,0r/data=ClkaLxIpGcJ25tSE4-Q_IQXZV8PqMDlAKhUwLjY1Mjc3MzMsIDI1LjE5MTA4MjIYAiABIiYKJAljNWnAzx3lPxGBzIC_vfvkPxmah9c2TjI5QCEPJfC6DzA5QDoDCgEw