Geocoding output result is duplicated when there is an unmatched address.

Workaround

Create a new connection to the geocode service.

1. In ArcGIS Pro, click the Insert tab.
2. Select Connection and click 'Add new ArcGIS Server'.
3. Use this URL: https://geocode.arcgis.com/arcgis/services.  Users are not required to fill in the password and username.
4. Click Finish.
5. Run the geocode process as usual but change the locator to World Geocoder from the new server connection.

Steps to Reproduce