GPG: [unknown] in a showpref output?

Question

I'm inspecting my key pair by showpref and get something like this:

[ unknown] (1). [email protected] <[email protected]>
     Cipher: AES256, AES, AES192, 3DES
     AEAD:
     Digest: SHA256, SHA512, SHA1
     Compression: Uncompressed, ZLIB, ZIP
     Features: MDC, AEAD
     Notations: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

I can not find the exact phrase [unknown] in the manual , but it seems that unknown means unknown trust level, judging by this section:

TRUST VALUES Trust values are used to indicate ownertrust and validity of keys and user IDs. They are displayed with letters or strings:

- unknown No ownertrust assigned / not yet calculated.
e expired Trust calculation has failed; probably due to an expired key.
q undefined, undef Not enough information for calculation.
n never Never trust this key.
m marginal Marginally trusted.
f full Fully trusted.
u ultimate Ultimately trusted.
r revoked For validity only: the key or the user ID has been revoked.
? err The program encountered an unknown trust value.

If I generated this key and it in the keyring, how could the trust level be unknown ? I'm really struggling to understand this, especially since in Kleopatra the same key's trust level is Ultimate, as I understand it should be.

any Ideas of why this discrepancy happens and should I manually change the trust level ?