Indicator is not displayed in "Handheld.StartActivityIndicator()" on iOS 13 or later

I am trying to display an indicator on an iOS device,
The same code is used, but it is displayed on iOS 12 terminals and not displayed on iOS 13 and later terminals.

#if UNITY_EDITOR || UNITY_IOS
[SerializeField] private UnityEngine.iOS.ActivityIndicatorStyle _iosStyle;
#endif

private void Awake ()
{
#if UNITY_IOS
Handheld.SetActivityIndicatorStyle( _iosStyle );
#endif
}

public void Show()
{
StartCoroutine(StartActivityIndicator());
}

private IEnumerator StartActivityIndicator(){
Handheld.StartActivityIndicator();
yield return new WaitForSeconds(0);
}

public void Hide(){
Handheld.StopActivityIndicator();
}

Do you know the indicator display processing in iOS13 or later?

Development environment
Unity2018.4.22f1

 

It's still not working in 2023 on any latest iOS device I tested... how can this be, is this abadoned?

 

Hey thanks for your reply!

Hmm I can try, but I fixed it now by using my own idling indicator while processing purchases, so I don't have any examples anymore. Is there a way to do a simple bug report without any additional "examples" and then I just reference this thread?