MB Revision only tracking the first meta field

I just purchased MB Revision, installed it, updated my meta boxes to "revision" => true.

In testing, I'm seeing that it is now tracking revisions, but only to the first field in the group. It is not tracking the other 5 or 6 fields I have that are defined in the same Meta Box array in my functions.php.

Is this a known bug? Here's my meta box array:

    $meta_boxes[] = array(
        'title'      => __( 'Media Location', 'media' ),
        'post_types' => 'message',
	'revision' => true,
        'fields'     => array(
            array(
                'id'   => 'audio',
                'name' => __( 'Audio Location', 'media' ),
                'type' => 'text',
            ),
            array(
                'id'   => 'video-id',
                'name' => __( 'Vimeo Video ID', 'media' ),
                'type' => 'text',
            ),
            array(
                'id'   => 'notes',
                'name' => __( 'Notes Location (url)', 'media' ),
                'type' => 'text',
            ),
            array(
                'id'   => 'scripture_reference',
                'name' => __( 'Scripture Reference', 'media' ),
                'type' => 'text',
            ),
			array(
				'id'   => 'transcript_status',
				'name' => __( 'Transcript Status', 'media' ),
				'type' => 'select',
				'options' => [
					'draft' => 'Draft',
					'published' => 'Published',
				],
			),
			array(
				'id'  => 'transcript_text',
				'name' => __( 'Transcript', 'media' ),
				'type' => 'wysiwyg',
			)
            
        ),
    );