Large title to small title switch in navigation bar is not smooth iOS 13, sticky

I have a UINavigationController with default value of it's navigationBar.prefersLargeTitles = true .

I am switching that to false when I push into a new scene lets call it (DetailsViewController), by changing it into the viewWillDisappear .

override func viewWillDisappear(_ animated: Bool) {
   super.viewWillDisappear(animated)
   navigationController?.navigationBar.prefersLargeTitles = false
}

Now in DetailsViewController I am using willMove(to parent:) .

override func willMove(toParent parent: UIViewController?) {
        navigationController?.navigationBar.prefersLargeTitles = true
}

To transition back to large titles .

Observe the attached snapshots of how iOS 13 doing it with how iOS 12 is doing it, considering iOS 12 is the correct behavior.

iOS 13 :

iOS 12 :

from Large title to small title switch in navigation bar is not smooth iOS 13, sticky