When reading a mail that was sent to me as CC i cannot see the other recipient(s). Somewhat related to https://bugs.kde.org/show_bug.cgi?id=249893 (cannot see email adress of sender). Both issues apply to mails in the outbox or sent-mail as well.
Observed in 4:4.5~20100902.1170752-1maemo1.1170522 .
Implemented, see Actions -> View -> Show all recipients.