Меняем параметр SECTION_ID на $arResult[«VARIABLES»][«SECTION_ID»], если мы выводим smart filter в section_horizontal.php
$APPLICATION->IncludeComponent(
"bitrix:catalog.smart.filter",
"smartFilter",
array(
"IBLOCK_TYPE" => $arParams["IBLOCK_TYPE"],
"IBLOCK_ID" => $arParams["IBLOCK_ID"],
"SECTION_ID" => $arResult["VARIABLES"]["SECTION_ID"], // меняем вот этот параметр
"FILTER_NAME" => $arParams["FILTER_NAME"],
"PRICE_CODE" => $arParams["~PRICE_CODE"],
"CACHE_TYPE" => $arParams["CACHE_TYPE"],
"CACHE_TIME" => $arParams["CACHE_TIME"],
"CACHE_GROUPS" => $arParams["CACHE_GROUPS"],
"SAVE_IN_SESSION" => "N",
"FILTER_VIEW_MODE" => $arParams["FILTER_VIEW_MODE"],
"XML_EXPORT" => "N",
"SECTION_TITLE" => "NAME",
"SECTION_DESCRIPTION" => "DESCRIPTION",
'HIDE_NOT_AVAILABLE' => $arParams["HIDE_NOT_AVAILABLE"],
"TEMPLATE_THEME" => $arParams["TEMPLATE_THEME"],
'CONVERT_CURRENCY' => $arParams['CONVERT_CURRENCY'],
'CURRENCY_ID' => $arParams['CURRENCY_ID'],
"SEF_MODE" => $arParams["SEF_MODE"],
"SEF_RULE" => $arResult["FOLDER"].$arResult["URL_TEMPLATES"]["smart_filter"],
"SMART_FILTER_PATH" => $arResult["VARIABLES"]["SMART_FILTER_PATH"],
"PAGER_PARAMS_NAME" => $arParams["PAGER_PARAMS_NAME"],
"INSTANT_RELOAD" => $arParams["INSTANT_RELOAD"],
),
$component,
array('HIDE_ICONS' => 'Y')
);
?>