Using Editor and mJoin with Responsive Extension is displaying [object Object]

flowte

We are using Editor with an mJoin php server side processing and render as per below:

              { data: "company", render: function ( data, type, full ) {
                    return $.map( data, function ( data, i ) {
                        if(data == null){return lang['no-company'];}else{return '<span class="view company" id="'+data.id+'">'+data.name+'</span>';}
                    });
               }},
               { data: "company_contact", render: function ( data, type, full ) {
                    return $.map( data, function ( data, i ) {
                        if(data.title == null){return lang['no-title'];}else{return data.title;}
                    });
               }},

This is the editor php:

Editor::inst( $db, 'contact' )
            ->field(
                Field::inst( 'contact.id' ),
                Field::inst( 'contact.fname' ),
                Field::inst( 'contact.lname' ),
                Field::inst( 'contact.health' ),
                Field::inst( 'contact.subscribed' ),
                Field::inst( 'customer.email' )
            )
        ->join(
                Mjoin::inst( 'company' )
                    ->link( 'contact.id', 'company_contact.id_contact' )
                    ->link( 'company.id', 'company_contact.id_company' )
                    ->fields(
                        Field::inst( 'name' ),
                        Field::inst( 'id' )
                    )
                ->where('company.id_venue', $_SESSION['login'][2])
             )
          ->join(
                Mjoin::inst( 'tag' )
                    ->link( 'contact.id', 'contact_tag.id_contact' )
                    ->link( 'tag.id', 'contact_tag.id_tag' )
                    ->fields(
                        Field::inst( 'name' ),
                        Field::inst( 'id' )
                    )
             )
          ->join(
                  Join::inst( 'company_contact' , 'array' )
                      ->join( 'id', 'id_contact' )
                      ->fields(
                          Field::inst( 'title' )
                      )
              )
         ->leftJoin('customer', 'customer.id', '=', 'contact.id_customer')
            ->where('contact.active', 0, '>')
          ->where('contact.id_venue', $_SESSION['login'][2])
        ->where( function ( $q ) {
                    $q->where('contact.id','(SELECT id_contact FROM contact_tag WHERE contact_tag.id_tag IN ('.$_GET['tag'].'))','IN', false);} )
        ->process($_POST)
        ->json();

This renders correctly when the columns are displayed full screen but when collapsed (under the responsive plugin) they are being rendered as [object Object]. As per the screen grabs attached (correct / incorrect).

Is there any way to get this to render correctly in the responsive view?