Verified on the latest rhevm si build, it's fixed.
# rpm -q rhevm rhevm-webadmin-portal
Please refer to the attached screen shot.
Created attachment 676776 [details]
Fixed Portal Login button
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.