How do I address Popup view truncation in iOS?

private View CreatePopupContent() 
{    
    VerticalStackLayout stack = new VerticalStackLayout() 
    {
        Spacing = 10,
        Padding = new Thickness(20),
        HorizontalOptions = LayoutOptions.Center,
        VerticalOptions = LayoutOptions.Fill,
        BackgroundColor = /*(Color)Application.Current.Resources.GetValueOrNull("Gray100")*/ Colors.LightGray,
        WidthRequest = 350
    };

    Label titleLabel = new Label() 
    {
        Text = /*popupTitle*/"Lorum ipsum",
    };

    stack.Children.Add(titleLabel);

    Label messageLabel = new Label() 
    {
        Text = /*popupMessage*/ "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua."
    };

    stack.Children.Add(messageLabel);

    var dismiss = new Button { Text = "Ok", Command = this.ClosePopupCommand, CommandParameter= "Ok" };

    var lorum= new Button { Text ="Lorum", Command = this.ClosePopupCommand, CommandParameter = "Lorum" };
    var ipsum= new Button { Text =  "Ipsum", Command = this.ClosePopupCommand, CommandParameter =  "Ipsum" };

    stack.Children.Add(dismiss);
    stack.Children.Add(lorum);
    stack.Children.Add(ipsum);

    Border border = new Border()
    {
        StrokeShape = new RoundRectangle
        {
            CornerRadius = new CornerRadius(20)
        },
        Content = stack,
        VerticalOptions = LayoutOptions.Fill,
    };

    return border;
}