iOS 13 can't set modalPresentationStyle = UIModalPresentationFullScreen on MPMediaPickerController instance. If I don't set it works fine in iOS 13. When I do set it shows a blank screen. So on iOS 13 forced to see this VC in a card like view instead of full screen.
Submitted Feedback Report: FB6123458
You can set the UIViewControler.modalPresentationStyle = 0.
I changed it to 0 and it worked and then back to UIModalPresentationFullScreen and it's working. Scratching my head as to why it's working now but it is. Guess it's now a non-issue. Thank you.
Neither of the following two causes the UIViewController to be presented in full screen for me (Xcode 11 beta 3):
self.modalPresentationStyle = .fullScreen
self.modalPresentationStyle = UIModalPresentationStyle(rawValue: 0)!