I think I've fixed it in this changeset: https://www.openstreetmap.org/changeset/152919606. Let me know if I did not. Now that I know this quirk (thanks!), there seems to be a lot of objects with the direction at the end of the `addr:housenumber` field, see this Overpass query: https://overpass-turbo.eu/s/1N6u. This wouldn't be too hard to fix using JOSM.