Yes, it works. Well, it is missing the location but it at least understands the format. What is it doing differently from the OSM site?

It's different software.

openstreetmap.org uses Nominatim:

https://github.com/openstreetmap/Nominatim

The photon link uses Photon:

https://github.com/komoot/photon

Nominatim processes OSM data, associating items of interest with features like town boundaries that enclose the item, or place markers that are nearby, and then is also a fairly pedantic search interface for that data.

Photon takes the data that Nominatim generates and sticks a more flexible search on top of it.

Checking for/creating an issue for Nominatim describing the address format that doesn't work well would be a useful thing to do, as global support is a goal there.