text: Most of these weirdly shaped buildings seem to come from a bad import: https://www.openstreetmap.org/changeset/31117254 has as a source "SASPlanet / Satellite (Google Maps)" which might be incopatible with ODBL.
  The tags on the buildings are also unusual: Shape_Area=*
  Shape_Leng=*
  building=constructie
  
  Reverting might be better than trying to fix geometry and tagging on all of these.