Attached is a certificate that made Kleopatra crash (related issue) but it also
causes GPGSM to fail when it is used as a recipient with:
gpgsm: certificate chain too long
gpgsm: can't encrypt to 'email@example.com': Bad certificate chain
The likely cause for it is that it has a cyclic issuer chain where:
The Comodo CA certificate is signed by AddTrust External CA Root, which itself
is cross signed by UTN - DATACorp SGC, meaning UTN - DATACorp SGC is itself
again signed by AddTrust.