How does breadcrumb display information block sections?

Question

PHP

There is a directory component. I add bread crumbs.
index.php file:

......
<?$APPLICATION->IncludeComponent(
  "bitrix:breadcrumb", 
  ".default", 
  array(
    "PATH" => "",
    "SITE_ID" => "s1",
    "START_FROM" => "0",
    "COMPONENT_TEMPLATE" => ".default"
  ),
  false
);?>
<br>
<?$APPLICATION->IncludeComponent(
  "bitrix:catalog", 
  "catalog_v3", 
  array(
    "ACTION_VARIABLE" => "action",
    "ADD_ELEMENT_CHAIN" => "Y",
    "ADD_PICT_PROP" => "-",
    "ADD_PROPERTIES_TO_BASKET" => "Y",
    "ADD_SECTIONS_CHAIN" => "Y",
    .......................
    )
  ),
  false
);?>
.....

When I go to the IB page, the breadcrumbs work correctly ("Home -> Auto"). There are subsections on the Auto page (eg BMW, AUDI, LADA...). I go to the subsection, bread crumbs do not change. Everything is also "Home -> Auto".
I go from subsection to item detail, breadcrumbs line up "Home -> Auto -> BMW -> X5"
How can I make subsections appear in the navigation chain when I'm on the subsections page?

Answer 1

First, check if the ADD_SECTIONS_CHAIN ​​parameter is passed to the catalog.section.list component, which is included in the section.php file of the catalog component (if the catalog template is used).