iOS DataBinding fails after unifying and updating to 1.3.1

I am facing a major issue while binding a control.. It was working fine previously. the set property is never fired when i change the state of control (like changing Editor text) This is a complete hard stop for us. our project completely relies on Binding.

Here is the sample

  public  class TestPage:ContentPage
    {
      public TestPage()
      {
          this.BindingContext = new TestPageViewModel();

          var lbl = new Label();
          lbl.SetBinding<TestPageViewModel>(Label.TextProperty, vm => vm.Name);

          var txt = new Editor() {WidthRequest=100 };
          txt.SetBinding<TestPageViewModel>(Editor.TextProperty, vm => vm.Name, BindingMode.TwoWay);

          Content = new StackLayout
          {
              VerticalOptions = LayoutOptions.Center,
              HorizontalOptions = LayoutOptions.Center,
              Children = { lbl, txt}
          };
      }
    }

  public class TestPageViewModel:BaseViewModel
  {     
      public TestPageViewModel()
      {
          this._Name = "Jason";
      }

      private string _Name;

      public string Name
      {
          get { return this._Name;}
          set { this._Name = value; this.OnPropertyChanged("Name"); }
      }
  }

Guys please let me know any solutions as soon as possible. @TheRealJasonSmith

Thanks in advance.