Sections disappear in breadcrumbs in the Bitrix-1C catalog, what to check?

Question

1C-Bitrix

Greetings.
In the bitrix catalog (small business) is the output of breadcrumbs.
In the product itself, it is displayed as it should - the full path from the section-subsection.
But when entering a subsection (parent or child), only a link to the catalog page is displayed and that's it.
The crumb template is custom, but the standard one is the same.
I don’t know what to think and why it’s so ... Tell me, who can come across it!

Answer 1

Because in the catalog.section component inside the catalog complex component (section.php file) the parameter ADD_SECTIONS_CHAIN ​​= N