There’s definitely wrong rendered in Osmarender, see this sample:
http://www.openstreetmap.org/?lat=48.69027&lon=6.71138&zoom=16&layers=O http://www.openstreetmap.org/?lat=48.69385&lon=6.74658&zoom=16&layers=O http://www.openstreetmap.org/?lat=48.68707&lon=6.77011&zoom=16&layers=O http://www.openstreetmap.org/?lat=48.67759&lon=6.79061&zoom=16&layers=O
4 times a lock, each rendered differently, just one correct.
Wyo
