Fortigate FSSO works with user but not Global Security group

Hello,

I have set up a firewall policy to test our FSSO functionality. I have noticed that when the FSSO group corresponds to a user DN it works fine, however, if it corresponds to a Global Security group, it does not work.

Below is the firewall policy:

show firewall policy *** config firewall policy     edit ***         set name "TestFSSO"         set uuid f44e2db6-3fe8-51f0-****-6d00*****3be         set srcintf "lan"         set dstintf "wan1"         set action accept         set srcaddr "all"         set dstaddr "all"         set schedule "always"         set service "ALL"         set utm-status enable         set inspection-mode proxy         set profile-protocol-options "custom-default"         set ssl-ssh-profile "certificate-inspection"         set av-profile "default"         set webfilter-profile "Default"         set dnsfilter-profile "default"         set ips-sensor "Default"         set application-list "Default"         set logtraffic all         set nat enable         set ippool enable         set poolname "Web Browsing Users"         set groups "test fsso"     next end

What I mean is that if "test fsso" contains a user DN, the policy works as expected. If "test fsso" contains a GS DN, it does not. The GS I'm pointing out to has the same user member.

Any advice?

Thank you