This bug is also present in FTD 6.6.5.1 and 7.0.1 as of December 2021 But 6.7.0 to 6.7.0.2 don't have this bug. So on FTD if you use Radius to map group policy, stay on 6.6.4 or go to 6.7.0.2 Had this problem on FTD after upgrading 6.6.4 to 6.6.5.1 ...