fix blocking datum plane BrepFaceSet implementation was faulty, if normal cache locks have been aquired they need to be released
fix blocking datum plane
BrepFaceSet implementation was faulty, if normal cache locks have been aquired they need to be released

jriegel/FreeCAD,jriegel/FreeCAD,jriegel/FreeCAD,jriegel/FreeCAD,jriegel/FreeCAD