Can't enable FIPS mode


I’m trying to enable FIPS mode on IceDragon, but whenever I click Enable FIPS on Security Devices nothing happens. Master password is enabled. It seems I’ve got issues modifying anything related to Certificates when Master Password is enabled (please see other bug report here, but FIPS requires Master Password to be set.

Operating System: Windows 7 64bit
Security Software: Cisco AnyConnect Secure Mobility Client

Any updates on this?