WPF ListView Extended SelectionMode + TextSearch Problem

I am facing a strage problem in ListView when we have selectionMode = Extended and TextSearch is enabled.

Here is a sample XAML:

<Window x:Class="TextSearchIssue.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525"><Grid><ListView TextSearch.TextPath="ProductName" ItemsSource="{Binding Products}" SelectionMode="Extended"><ListView.View><GridView><GridViewColumn DisplayMemberBinding="{Binding ProductName}" /><GridViewColumn DisplayMemberBinding="{Binding Description}" /></GridView></ListView.View></ListView></Grid></Window>

and here is the code-behind:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace TextSearchIssue
{

    public class ProductDetails
    {
        public string ProductName { get; set; }
        public string Description { get; set; }
    }

    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            DataContext = this;
        }

        public List<ProductDetails> Products
        {
            get
            {
                List<ProductDetails> lst = new List<ProductDetails>();
                lst.Add(new ProductDetails() { ProductName = "Adobe", Description = "Adobe" });
                lst.Add(new ProductDetails() { ProductName = "Microsoft", Description = "Microsoft" });
                lst.Add(new ProductDetails() { ProductName = "Apple", Description = "Apple" });
                lst.Add(new ProductDetails() { ProductName = "Digia", Description = "Digia" });
                lst.Add(new ProductDetails() { ProductName = "Nokia", Description = "Nokia" });
                lst.Add(new ProductDetails() { ProductName = "HP", Description = "Adobe" });

                return lst;
            }
        }
    }
}

Now, run the application and select item "Nokia" with mouse. After this, if I press key M on keyboard, Microsoft gets selected. However, if I type Shift + M, all items between Nokia and Microsoft gets selected. How can I disable use of Shift key when I am doing a textsearch using keyboard?

I checked in Windows Explorer and there Shift key is neglected when user is doing a search using keyboard.

Can somebody please help me in this?