strange private keys

[alanesmizi]

I am importing these crates
curve25519-dalek-ng = "4.1.1"
x25519-dalek = "1.1.0"

And I am generating a Curve25519 private key from a Ed25519 private key with the following code:
// Obtain the secret point from the Private Key Ed25519 of 64 bytes
let secret_key_point: EdwardsPoint = &secret_key_scalar * &ED25519_BASEPOINT_POINT;

// Generate the X25519 key pair from the Private Key Ed25519
let curve25519_private_key_montgomery = secret_key_point.to_montgomery();

But now I have an issue, when I create a StaticSecret, for example as:

let curve25519_private_key_ss = StaticSecret::from(curve25519_private_key_array);

I get a different result depending on how many times I run it

private_key = x25519::StaticSecret::from(self.config.cgrodt_private_key);

self.config.cgrodt_private_key and curve25519_private_key_array having the same value, produce different private keys.

Now, this obviously should not happen but on top, to give you an example, these two private keys are generated:

0HloxiLX/gYf2s3WLlkPibiU4NuSK1C6otJsoNNfo3o=
1XloxiLX/gYf2s3WLlkPibiU4NuSK1C6otJsoNNfozo=

If you convert this to Hex and then to ASCII you get

olxEyeMlittle-alpha-word

and

myellite-alpha-word

Neither look very random to me.

I am under the impression either the code is compromised or the crate is compromised.

Any ideas?