How to properly handle Toast widget on application quit?

Hi,

i have this simple code to show Toast popup on android when the user taps back button:

 AndroidJavaClass unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
 AndroidJavaObject currentActivity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity");
 AndroidJavaObject context = currentActivity.Call<AndroidJavaObject>("getApplicationContext");
 
 currentActivity.Call("runOnUiThread", new AndroidJavaRunnable(() => {
     AndroidJavaClass toastClass = new AndroidJavaClass("android.widget.Toast");
     AndroidJavaObject toast = toastClass.CallStatic<AndroidJavaObject> ("makeText", context, "Press BACK again to exit", toastClass.GetStatic<int>("LENGTH_SHORT"));
     toast.Call ("show");
 }));

After the user taps again i call:

 Application.Quit();

app quits but the popup remain showed frozen and i get Activity pause timeout and then the application crashes due to WIN DEATH: Window{a173b9b u0 Toast}

Is there any way to handle the runOnUiThread, should i detach it somehow?

Thanks for help!