Currently (on version 1.31.15), we have a form with nested fields that is getting mixed results when we try to retrieve values. The nested fields are composed of a simple field called organization with a fields property, where there's at least one field called organization.name, for example. When we try to get the values with form.values(), the result for organization is undefined, however when we try to get form.$('organization').value, we get an object representing the nested fields, for our example it would be: { name: '' }.

Thanks for the hard work! Let me know if I can help you with anything.