Sorry, this has been fixed and forgot to update here. Now the only packages without changelog are those from non-Ubuntu sources, for obvious reasons.
** Changed in: muon (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1178268 Title: Muon update manager not showing changelog for every package To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/muon/+bug/1178268/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs