I am using Open Street Maps, and attempting to use a custom binding to a field, called "location" (which is not one of the custom components supported by OSM, hence why I'm using a custom binding), following the instructions here: Metabox Geolocation. The field auto-populates when I bind it to a single field, but not when I attempt to merge two fields. So, for example: auto-populating works when I bind 'country', but not when I bind 'city + " " + country'. Is this a bug?
Additionally: I have tried this using both generated PHP and the UI - both have the same issue.