Setting DatePicker date from code doesn't seem to work when inside a TableView

Hi folks, not sure if this is a bug. I'm trying to set the value of a DatePicker control from code. When the DatePicker is in a normal layout, everything works fine. However, if I add the DatePicker to a TableView, the control doesn't seem to redraw and show the changed date. NOTE : I'm testing this in Windows Phone.

This works

class DPPage : ContentPage
{
    public DPPage ()
    {
        Label header = new Label
        {
            Text = "DatePicker",
            Font = Font.BoldSystemFontOfSize(50),
            HorizontalOptions = LayoutOptions.Center
        };

        DatePicker datePicker = new DatePicker
        {
            Format = "D",
            VerticalOptions = LayoutOptions.CenterAndExpand
        };

        var b = new Button();
        b.Text = "Press Me";
        b.Clicked += (object sender, EventArgs e) =>
        {
            datePicker.Date = DateTime.Now;

        };

        // Build the page.
        this.Content = new StackLayout
        {
            Children = 
            {
                header,
                datePicker,
                b
            }
        };
    }
 }

This doesn't.

  class DPPage : ContentPage
 {
   public DPPage ()
    {
        Label header = new Label
        {
            Text = "DatePicker",
            Font = Font.BoldSystemFontOfSize(50),
            HorizontalOptions = LayoutOptions.Center
        };

        DatePicker datePicker = new DatePicker
        {
            Format = "D",
            VerticalOptions = LayoutOptions.CenterAndExpand
        };

        var b = new Button();
        b.Text = "Press Me";
        b.Clicked += (object sender, EventArgs e) =>
        {
            datePicker.Date = DateTime.Now;

        };

        var table_view = new TableView
        {
            Intent = TableIntent.Form,
            Root = new TableRoot("DatePicker")
            {    
                new TableSection("DATE INFO")
                { 
                    new ViewCell
                    {
                        View = new StackLayout
                        {
                            Children = 
                            {
                                header,
                                datePicker,
                                b
                            }
                        }
                    }
                }
            }
        };

        // Build the page.
        this.Content = new StackLayout
        {
            Children = 
            {
                table_view
            }
        };
    }
}

}

Interestingly, when the date is changed via clicking the button button, when the date picker is selected , it shows todays date even though the UI in the cell hasn't changed

Anyone else see this behaviour?

regards