apt-listchanges doesn't work if an existing apt-listchanges window is open

Binary package hint: apt-listchanges

If an existing apt-listchanges window is there, and one updates few
more packages, then apt-listchanges decides to not show. It should
spawn another window or something.

Configuration given at /etc/apt/listchanges.conf
[apt]
frontend=xterm-pager
email_address=root
confirm=1
save_seen=/var/lib/apt/listchanges.db
which=news headers

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 8.10
Package: apt-listchanges 2.82
PackageArchitecture: all
ProcEnviron:
 SHELL=/bin/bash
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_IN
SourcePackage: apt-listchanges
Uname: Linux 2.6.24-16-generic i686