The logic was determining if the Event node's primary type or mixins were equal to or derived from one or more given types. This was backwards and was allowing too many events to get through. The logic should check if the collection or one or more given types are equal to or derived from the primary type or mixins of the Event node. Changes to JcrNodeManager and JcrObservationManager will be needed. And once fixed, uncomment the appropriate tests in JcrObservationManagerTest and JcrTckTest.