Hi Fidencio,
Because both xiaodwan and I can't reproduce the bug on rhel6 according conmment10 and verifying the bug with virt-viewer-2.0-9.el6.x86_64 has no problem, as we talked at xChat, please help to close the bug as verified and put the flag SanityOnly
thanks
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://rhn.redhat.com/errata/RHBA-2016-0832.html