order.listener() with complex header

kthorngren

I'm trying to workout how to use order.listener() with complex headers. Trying to set the listener to use only the icon for the Position th in this test case:
https://live.datatables.net/kekazaxo/1/edit

Using this code:

let th = table.column(1).header(0);
$( th ).attr('data-dt-order', 'icon-only');
table.order.listener( $('span.dt-column-order', th), 1);

The listener is set properly but the dt-ordering-[asc|desc] class is not applied and the sorting icon is not updated. Do I need to do something differently?

FYI, I was trying to provide an example in this thread.

Kevin