Does amethyst auto block people?

I'm getting a pretty weird behavior in Garnet with regard to a certain npub, I guess some specific person replied to something I said, I went to see it and he shows as blocked though I've never encpuntered him. When I go back to my notifications, his reply is gone. When I unblock, then go refresh, it shows blocked again. When I search the npub in primal using the same nsec, it's not blocked. When I search in Garnet using a different nsec, it's also blocked. If I follow it won't show as blocked.

I don't know if this is a bug or if amethyst is shadow blocking people in the client. Does anyone know anything about this?

If youre using amethyst or garnet, you can test it, here's the npub