/design/themes/responsive/templates/views/products/components/product_features_short_list.tpl
{if $feature.features_hash && $feature.feature_type == "ProductFeatures::EXTENDED"|enum}
<a href="{"categories.view?category_id=`$product.main_category`&features_hash=`$feature.features_hash`"|fn_url}">
{/if}
поменять на
{if $feature.features_hash && $feature.feature_type == "ProductFeatures::EXTENDED"|enum}
<a href="{"product_features.view?variant_id=`$feature.variant_id`"|fn_url}">
{/if}