Verified in rhevm-3.5.1-0.1.el6ev (vt14). Verified exactly according to comment 1. Login form submits and user is successfully logged in. Tried with login to User Portal as well as to Webadmin.
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/RHSA-2015-0888.html