[VM3.2.2, J3.7.2] backend product filtering reset

[d0ublezer0]

I have a task to hide goods without price.

Initially configured products in the list - 400
I sorted the goods by price
I changed filter in product list header to display 100 products per page
I chose all the goods in filtered list (100 per current page).
Unpublish them.

- and the number of products on the page has returned to 400

How?