Verified with following build: katello-cli-common-0.1.108-1.el6_3.noarch katello-0.1.313-1.el6_3.noarch katello-cli-0.1.108-1.el6_3.noarch Hidden user is not visible now. I verified with existing (administrator, Read Everything) and newly created roles.
Created attachment 590172 [details] no hidden user under existing/newly created roles
Technical note added. If any revisions are required, please edit the "Technical Notes" field accordingly. All revisions will be proofread by the Engineering Content Services team. New Contents: When adding users to roles, "hidden user" is listed as a user that can be added to roles. This update removes "hidden user" from the list of users that can be added to roles.
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. http://rhn.redhat.com/errata/RHBA-2012-1062.html
getting rid of 6.0.0 version since that doesn't exist