Hi,
Can you try replacing the code:
$value = hikaInput::get()->getVar($name);
by:
$value = hikaInput::get()->getVar($name, null);
if(is_null($value) || (is_string($value) && !strlen($value))) {
$cid = hikaInput::get()->getInt("cid",'itemid_'.hikaInput::get()->getInt("Itemid",0));
$value = $app->getUserState('com_hikashop.'.$cid.'_filter_'.$uniqueFitler->filter_namekey, '');
}
in the file components/com_hikashop/views/product/tmpl/listing_div.php and it should help.
If not, we'll need a FTP access in order to look into it.