Build 122 is the latest one I believe so we can rule this out as well.
I would do the following as well if I were you:
1) Double-click on of the gateways, navigate to Network Management and select the "get interfaces without topology" option. This option will get all interfaces without changing your existing topology. This might just be what you need for the SMS to 'see' there are no issues with its connection to the gateway.
2) In expert mode, try cpstop ; cpstart in case there is a daemon responsible for this false status and needs restarting. Providing you use PSK-based VPNs and not certificate-based ones, there shouldn't be any service disruption to your environment.
3) If neither of the above works, try a failover of one of your clusters to see if that does it.
Once again, resetting SIC is another troubleshooting step worth doing I believe.
Let us know of the results.