As we move the map, the URL should update. Just like on OSM.org. One only finds e.g., https://simon04.dev.openstreetmap.org/whodidit/?lat=24.18&lon=120.86&zoom=12 ( https://simon04.dev.openstreetmap.org/whodidit/?lat=24.18&lon=120.86&zoom=12 ) in the RSS, and the zoom was not retained intact either.