How to reproduce:

1. Create a user
2. Create a role with following permissions: view, create, add, remove filters; view, edit roles; view, assign organizations; view, assign locations;
3. Assign the new role to the new user
4. login as a user
5. Go to Administer -> roles
6. Press 'Filters' button for any role except for the new one.

Expected: list of filters for that role

Actual: empty list

While investigating, I have found that the problem starts in app/services/authorizer.rb:25
The query produced by user.filters contains a filter on role_id which is not needed there.