Since updating my Mac to Big Sur beta 3 (20A5323I) the Apple SSO extension has stopped working. The menu bar item is still their and appears normal (shows user is signed in, network is connected), but Safari has stopped SSOing anything. Both internal sites using kerberos and external sites that had SSO with our IdP (Ping) were working in previous betas, but now fail in beta 3. The internal sites now prompt user to sign in, and external sites using Ping IdP fail with a web page that displays "Kerberos Authentication Error." The failures are the same failures we see when the SSO extension is not configured or when the user is not signed in.