Hello,
For what I see in the code, the missing "ItemId" in the URL has been fixed on November 30th, before the HikaMarket 4.1.1 release.
Can you please check that you do not have a view override for the HikaMarket "productmarket / listing" view ?
If you don't have an override, you should find the corresponding line :
echo '<a href="'.hikamarket::completeLink('product&task=listing&cid='.$breadcrumb->category_id.$this->url_itemid).'">'.JText::_($breadcrumb->category_name).'</a>';
Where the variable "$this->url_itemid" contains the SEF information for the Joomla Router.
Regards,