When on the Sitefinity/ecommerce/products page of the backend, if you click the filters under "Other filter options" (Published, Draft...) they work as expected, but only until you click on the Search button.
Once you click this button, even if you close the search right away, all those filters will return the whole list of products.
Can you confirm this bug? Thanks.
(Tested in SF 8.0 & 8.1)