FortiGuard HTTPS communication

To mitigate the vulnerability in FortiGuard communication (FG-IR-18-100) Fortinet introduced HTTPS communication in 6.0.8 and 6.2.x.

https://docs.fortinet.com...er-port-443-with-https

has anyone enabled this communication variant and does this work correctly for you?

the first location we attempted this after upgrade to 6.0.8 ran into webfilter issues the next day.