apt-listchanges crashed with AttributeError in __init__(): ControlStanza instance has no attribute 'Package'

I had forgotten an update was running, via update-manager, for a few days. When I discovered it was still running there was an apt-listchanges message which I ack'ed and then I received this crash.

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: apt-listchanges 2.85.13ubuntu3
ProcVersionSignature: Ubuntu 4.3.0-2.11-generic 4.3.0
Uname: Linux 4.3.0-2-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.19.3-0ubuntu2
Architecture: amd64
Date: Mon Jan 4 09:05:47 2016
ExecutablePath: /usr/bin/apt-listchanges
InstallationDate: Installed on 2013-01-16 (1083 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130116)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/apt-listchanges --apt
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
 LANG=en_US.UTF-8
PythonArgs: ['/usr/bin/apt-listchanges', '--apt']
SourcePackage: apt-listchanges
Title: apt-listchanges crashed with AttributeError in __init__(): ControlStanza instance has no attribute 'Package'
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: