Geocoding of location data causing map input to accept multiple markers

Have set up the following:

• Content type with address field and geofield
• Geofield widget is set to OpenLayers Map
• Geocoder settings are set to 'Enable geocoding of location data' from address field
• Everything configured as outlined by GreenSkunk in #1824708: How-to usecase? Add optional geocoding to map input widget → so that only a single point can be marked and moved on the map.

Steps:

1. Create node
2. Add an address
3. Map shows a single 'draw feature' button (see attached image) and only allows you to place a single point and move it (desired behaviour)
4. Click 'Find using Address field'
5. An extra 'draw feature' button is now visible and the map now allows multiple markers to be placed.