There are though. The ciphers from the second Biome were not registering when the game launched and that's the one I already collected and can't collect anymore unless I play again, it seems.There are no bugged cyphers. Some of them are just really rare. RNG and all that.
Edit: Just take a look at the "Ciphers Collected" count and sum the total on the right and you'll see what I mean.
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