MVVM Light WinRT bug in Debug mode

public abstract class BaseModel : ObservableObject
{
    public string Title
    {
        get { return title; }
        set { Set("Title", ref title, value); }
    }
    private string title;
}

public class ChildModel : BaseModel
{
}

///////

var child = new ChildModel { Title = "temp" };

//  myType.GetTypeInfo().GetDeclaredProperty(propertyName) returns null for "Title"