Nothing relevant in this syslog, unfortunately. However I just did a miminal Kubuntu install in a VM, and I can confirm the problem. The thunderbird package is marked as installed, but neither /usr/bin/thunderbird nor /usr/share/applications/thunderbird.desktop are present on the system. It's as if they had been manually deleted without interaction with apt.
** Changed in: thunderbird (Ubuntu) Status: Invalid => Confirmed ** Changed in: thunderbird (Ubuntu) Importance: Undecided => Medium ** Summary changed: - Mozilla Thunderbird package is not properly installed + thunderbird is not properly installed in a Kubuntu minimal install -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1874623 Title: thunderbird is not properly installed in a Kubuntu minimal install To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1874623/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs