Actually according to https://phab.lubuntu.me/w/bugs/ it looks like Lubuntu just tracks bugs via Ubuntu itself.
affects ubuntu/calibre status new tag lubuntu ** Also affects: calibre (Ubuntu) Importance: Undecided Status: New ** No longer affects: calibre -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1884525 Title: Cannot start calibre To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1884525/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs