When sharing favorites, a link to Openstreetmap is generated in addition to a link to Google Maps. The OSM link causes a map display without a marker at the location.
To get a marker, the OSM link could be put in a form like this:
A link to Openstreetmap is generated along with a link to Google Maps when sharing favorites. The OSM connection results in the place not having a marking on the map.
When sharing favorites, a link to Openstreetmap and a link to Google Maps are both generated. Due to the OSM link, the location is not marked on the map.