I don't think this is a problem in package mozilla-thunderbird. It might be better to assign it to kde-guidance, kcontrol or even the package that contains update-alternatives (I don't know which one it is).
I don't think this is a problem in package mozilla- thunderbird.
It might be better to assign it to kde-guidance, kcontrol or even the package that contains update-alternatives (I don't know which one it is).