That shouldn't be possible unless there's multiple instances of Mostr. Maybe you're seeing users from my local dev instance?
nostr:npub108pv4cg5ag52nq082kd5leu9ffrn2gdg6g4xdwatn73y36uzplmq9uyev6 looks like i got a duplicate bug.
If you follow an mostr user with mostr, You got double user.
Discussion
this was happening to me the other day when I responded to one of your posts
I could not tell, but the nip05 is strangely valid.
Here's the pubkey of my duplicate: nostr:npub18nm52c6lytlynt4etmtxh4scr36tdjzkq9sgd2ynden33l2lccjqwst7ak
looks like the same thing happening to my npub, (you might not be able to see this quote below on fedi) : nostr:note1yeraen9jcdsq7krju5sflq7w4rge56y5tlypfxvv09crv0nda93smxhuvg