In Kleopatra's list of certifications for a certificate, the name column is empty if the certifier's certificate has expired. This goes back to gpg --with-colons --check-sigs not printing the user id when the key is expired (or otherwise unusable).
Looking at the gnupg code, this seems to be on purpose (is that correct?)
Having the name shown here would be useful to an end-user, since it would make it trivial to figure out for which person they need to get a new/extended certificate.