Item Class Restriction Group
Under restriction group, I've setup a group name "Nonstock" - it's active and group type A Inverse.
Under Restriction Group by Item Class, I've selected the Nonstock restriction group.
Under Restriction Groups by User, I've selected the Nonstock restriction group.
But the user can still see all items of Item Class "Nonstock".
Did I skip a step? I'm on 17R2.