Comment # 4 on bug 1088447 from Johannes Meixner

Yes, things work as intended so that
there is no bug and the issue is invalid, cf.
https://bugzilla.suse.com/page.cgi?id=status_resolution_matrix.html

Andreas Lauser,
in particular see the section about
"It is crucial to not accept remote print queue information
 from untrusted hosts"
in that openSUSE SDB article in comment#1.

FYI
why
"everything worked fine with even older versions of Ubuntu"
see
https://fate.opensuse.org/316708
that reads (excerpt):
==============================================================
Regarding Ubuntu and firewall, see

https://help.ubuntu.com/13.10/serverguide/firewall.html
that reads:

---------------------------------------------- 
The default firewall configuration tool 
for Ubuntu is ufw. 
... 
ufw by default is initially disabled. 
-----------------------------------------------
==============================================================
versus
https://en.opensuse.org/SDB:CUPS_and_SANE_Firewall_settings
that reads (excerpt):
==============================================================
The intended purpose of security measures is to make things
not "just work" which means security causes some kind of
annoyance for the user when things do not "just work"
out of the box. If everything would "just work" by default,
it would be totally insecure. 
==============================================================