Bitrix smart filter AJAX instant filtering?

Question

1C-Bitrix

Good afternoon!
I want to get instant filtering without reloading the page.
Bitrix, at the root of catalog.smart.filter, below catalog.section for both "AJAX_MODE" => "Y"
I add catalog.smart.filter

"AJAX_MODE" => "Y",
"INSTANT_RELOAD" => "Y",
"AJAX_OPTION_JUMP" => "N",
"AJAX_OPTION_HISTORY" => "Y"

In both cases, the following happens:
1. I select a parameter in the filter, the filter itself immediately disappears, the filtering results in catalog.section are unchanged.
2. I refresh the page, the filter appears and the results in catalog.section according to the filter.

If I do some kind of filtering in catalog.section there I have the number of displayed products on the page and sorting, the same thing happens ..catalog.section disappears, after refreshing the page it appears already with a filter.

There are no errors in the console...
How can I debug? What might not work?