Thanks for your reply.
It is necessary that the products that are in pre-order are also taken into account in filtering by attributes.
For example, if I select just the “9-inch” attribute, I will only see items that are in stock.
When I uncheck the “out of stock visibility” checkbox, products that are on pre-order are displayed when filtering, as we need, but then filtering by the presence of variable products stops working.
https://imgur.com/a/U3mW5os
