possible you might have a bad p-tag in one of your follow/mute list (like a t-tag)

many (most?) clients try to parse the non-hexpubkey as a pubkey, they fail and they give up; I've seen it a bunch of times where I try to follow someone, it *looks* like it worked, but then I see my list wasn't updated because of it

overloading kinds with a bunch of different meanings leads to these issues, but the root problem is that most nostr devs don't code defensibly enough