Element property not showing in smart filter?

Question

1C-Bitrix

After the import, the smart filter began to work incorrectly, some products that are indicated in the properties are shown, and in some products they are not shown at all, I don’t understand what’s wrong.
Let's say there is a product. Let's say we create a test list content property, where it will display 1,2,3 as a list. There are two products: 'Walk with me magnet' where everything is successfully displayed and RIOLIS STAND WITH A SET OF THREAD (160 COLORS) Where nothing is displayed in the filter. In the magnet, we indicate the value 3 in the test list, and in the STAND, we indicate 2. Now, if we display a smart filter.

Although I did everything the same as in the magnet, made it available, added the product to the warehouse, indicated activity. But what is connected with this product is that it does not want to be shown in the filter.
What could be the problem?