Why frequentPushEnablementUpdates is not updating?

Question

At the moment, I am listening for any update in the ActivityAuthorizationInfo, but it never gets called.

for await frequentPushEnabled in self.activityAuthorizationInfo.frequentPushEnablementUpdates {
    // This never gets executed. Not even by toggling "More Frequent Updates."
}

1. How can I detect and test when the user turns off frequent push updates for the live activity?
2. Is it normal that the live activity gets dismissed when I turn off "More Frequent Updates"?