Verified against CFME 5.8.1.4 with Chrome,Firefox, IE11 on Windows 7, Windows 2012, Fedora 26, against VMware 6 Windows and Linux VMs. CTRL+ALT+DEL Button works in all cases. Toggle Full Screen button does NOT work on Firefox browser in all cases. Previously open bug for that is here: https://bugzilla.redhat.com/show_bug.cgi?id=1454912
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://access.redhat.com/errata/RHSA-2017:1758