"viewWillAppear" not getting called on iOS 13 Xamarin.ios Native.

I am using MvvmCross, for me the viewWillAppear is getting called every time for some time interval and after that "viewWillappear" method is not getting called for any view, not even for showing a new view.

Similar behaviour on iOS 13 simulator.

I am using following versions :

Visual Studio : Version 8.3.5 (build 13)
Xamarin iOS : 13.4.0.2
MvvmCross : 4.4.0

In my baseview's ViewDidLoad() method I have added the following code but its not working with reference to this link

navigationController.ModalPresentationStyle = UIModalPresentationStyle.FullScreen;

A lot of my code depends on "viewWillAppear" I am adding sub views runtime as well those are not getting added as "viewWillAppear" not getting called.

If anyone has any idea why this is happening.

Thanks,
-Vaibhav Bangde.