SwiftUI: unwanted split view on iPad

Question

Problem: a view on Pad shows up with unwanted split view.

My current setup is: Catalina OSX beta 5 + Xcode 11 Beta 5

Here is the c

Answer 1

To use this split style for iPad but remove for iPhone:

    extension View{
    func phoneOnlyStackNavigationView() ->some View{

        if UIDevice.current.userInterfaceIdiom == .phone{
            return AnyView(self.navigationViewStyle(StackNavigationViewStyle()))
        }else{
            return AnyView(self)
        }
    }
}