Search results show incorrectly

Description

Steps to reproduce

1. Install the QuickSilver sample site.
2. Set access rights for category "Mens" by restricting to admins only.

3. Create a test user.
4. Log in with the test user.
5. Search for "Faded Glory Mens" in the Commerce UI.

Expected
Show no results for which the test user lacks permission.

Actual
Shows results for which the test user lacks permission.