Problem with generating Brainpool P-512

[Vojtěch Širůček]

Hello,

I have encountered quite unusual problem.

I had been able to already generate brainpool keys but it is quite a
time ago but when I try to generate them now the gpg fails with

    gpg: signing failed: Invalid length
    gpg: make_keysig_packet failed: Invalid length
    Key generation failed: Invalid length
    [GNUPG:] ERROR key_generate 67109003
    [GNUPG:] KEY_NOT_CREATED

and in syslog I have found this

    gpg-agent[pid]: a 256 bit hash is not valid for a 512 bit ECC key
    gpg-agent[pid]:command 'PKSIGN' failed: Invalid length

Full debug in paste https://ghostbin.com/paste/oeth5

I would appreciate any input

Best regards

VŠ