Order Custom field:not appears in order_list/order_detail page of the backoffice

-- HikaShop version -- : 4.2.3
-- Joomla version -- : 3.9.18
-- PHP version -- : 7.2.30
-- Browser(s) name and version -- : CHROME 81.0.4044.138

I've added an order "custom field" of type "AJAX FILE", I've configured this field to be visible on the administration page (see attached screenshot file).
When creating an order, the user upload a file, it's well uploaded on the server and it appears well in the "ag_hikashop_order" table field.
Problem : the file doesn't appear in the backoffice detail order page, nor in the backoffice order list page.