yum does not work consistently with RPMs with '0:' in the name

Issue

Installing RPMs with the '0:' in the name works, but doing a 'yum list installed rpm_name' fails if the name has a '0:' in it.

Fails on RHEL5.11 and 6.5

Example:

PKGNAME=$(repoquery "ypserv*" | sort -n  | tail -1)
yum -y install $PKGNAME
yum list installed $PKGNAME

The package will be installed and can be viewed in 'rpm -qa | grep ypserv'. The 'yum list installed PKGNAME' or 'rpm -q PKGNAME' does not show it. If you search for the name without the '0:', then both the yum list installed and rpm -q command work.