Discount for variants in the module

-- HikaShop version -- : 3.2.1
-- Joomla version -- : 3.8.2
-- PHP version -- : 7.0.19

I have products that have variants at different prices. The discount section is set to a discount for the selected product variant. I want to display these product variants in the Hikashop Content Module. In the module I have marked "Discounted only". Discounted items are not displayed
When I set the discount for the main product (all variants), the product is displayed in the module.
Is it a bug that the Hikashop Content Module does not display individual product variants for which the discount is set?

Hi,
Thank you. Not good information for the client