When using multiple filters, blacklists seem to be ignored.

Current behavior:

Filter A is setup to allow the tag c:food.
Filter B is setup to deny Apples.
All food including apples are able to be inserted into the barrel.

Expected behavior:

Filter A is setup to allow the tag c:food.
Filter B is setup to deny Apples.
All food but apples should be able to be inserted into the barrel.