It something really difficult to test .Do you have only that relay configured as public inbox relay? If clients does not make use of the outbox model and your list is too short, its likely you'll miss most of the notes. 

 Amethyst picks up all the notifications just fine. Does Pokey work much differently? 

 Probably the difference is that Amethyst connects to outbox and inbox relays, while Pokey only connects to your inbox