Super hacky hack for forcing showing the Back button in the NavigationBar on iOS. Why does it work?

BackShizzle.cs

public override void ViewWillAppear(bool animated)
{
    base.ViewWillAppear(animated);
    NavigationItem.SetHidesBackButton(true, false);
    NavigationController.NavigationBar.SetNeedsDisplay();
}

public override void ViewDidAppear(bool animated)
{
    NavigationItem.SetHidesBackButton(false, true);
}

public override void ViewWillDisappear(bool animated)
{
    base.ViewWillDisappear(animated);
    NavigationController.NavigationBarHidden = true;
}