I'm getting the following warning when using the Metabox Geolocation plug in and the MetaBox builder plug in.
I've tried using one input field called 'address', which works for known addresses but doesn't seem to support Lat/Long values.
So I have two other fields: Lat and Lng and my Maps input has 'address, lat, lng' in the Address Field box.
I have another instance of google maps running through <script>, however, I'm only loading the Google maps API conditionally when I'm on that page. And I don't see the same Google maps warning on that page. In that instance the callback is '&callback=initMap' at the end of the API key.
How can I add the callback through the map field in the builder?
I think I found the error, and it links to another issue that I found elsewhere to do with the maximum number of fields groups: when you exceed it the settings get lost, e.g Post_type reverts to 'post' from whatever else it was set to... and similarly the custom setting geo.api_key get's lost too!