Thanks for reporting this. It isn't a bug as such but a request for a new feature, or at least a change in behaviour. That's really something that needs to be addressed upstream by the KDEPIM developers. It may be that it behaves that way for a good reason and that's a decision for KDE not Kubuntu.
The best thing to do would be file this as a wish on bugs.kde.org and link it here so we can track the outcome.
Thanks for reporting this. It isn't a bug as such but a request for a new feature, or at least a change in behaviour. That's really something that needs to be addressed upstream by the KDEPIM developers. It may be that it behaves that way for a good reason and that's a decision for KDE not Kubuntu.
The best thing to do would be file this as a wish on bugs.kde.org and link it here so we can track the outcome.