Google Sign-In for iOS: serverAuthCode is intermittently missing
问题 We first reported this on a Google Issue Tracker but were redirected here. We have been using Google Sign-In for iOS in our iOS app. When a user signs in, our GIDSignInDelegate receives a call to sign(_ signIn: GIDSignIn!, didSignInFor user: GIDGoogleUser!, withError error: Error!) . Until this afternoon, the GIDGoogleUser that we receive in this call has always contained a non-nil authentication?.idToken and a non-nil serverAuthCode , or else error is non-nil and contains information about