elementname.patch

diff --git a/samples/Sandbox/MainWindow.axaml b/samples/Sandbox/MainWindow.axaml
index 6929f192c75098fa26851573ddd5a3fb70d19e30..d6ddf70b0337675596b283de5e0c680e55c7002c 100644
--- a/samples/Sandbox/MainWindow.axaml
+++ b/samples/Sandbox/MainWindow.axaml
@@ -1,4 +1,20 @@
 <Window xmlns="https://github.com/avaloniaui"
         xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
         x:Class="Sandbox.MainWindow">
+  
+  <Grid RowDefinitions="Auto, *, Auto">
+    <TextBlock Text="Text" Name="TB" Grid.Row="0" Margin="0,0,0,4" />
+    
+    <ListBox x:Name="LB" Grid.Row="1">
+      <ListBox.ItemTemplate>
+        <DataTemplate>
+          <TextBlock Text="{Binding #TB.Text}" />
+        </DataTemplate>
+      </ListBox.ItemTemplate>
+    </ListBox>
+    
+    <Button Grid.Row="2" Content="Regenerate" Click="Button_OnClick" />
+    
+  </Grid>
+  
 </Window>
diff --git a/samples/Sandbox/MainWindow.axaml.cs b/samples/Sandbox/MainWindow.axaml.cs
index 3d54036d29d6e108931327e266565540d0d52728..3ba097e02c8399b367791075c537241534f36d1c 100644
--- a/samples/Sandbox/MainWindow.axaml.cs
+++ b/samples/Sandbox/MainWindow.axaml.cs
@@ -1,21 +1,46 @@
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
 using Avalonia;
 using Avalonia.Controls;
+using Avalonia.Interactivity;
 using Avalonia.Markup.Xaml;
-using Avalonia.Win32.WinRT.Composition;
 
 namespace Sandbox
 {
     public class MainWindow : Window
     {
+        private readonly ObservableCollection<string> _data;
+
         public MainWindow()
         {
             this.InitializeComponent();
             this.AttachDevTools();
+
+            var lb = this.GetControl<ListBox>("LB");
+
+            _data = new ObservableCollection<string>();
+
+            for (int i = 0; i < 50; i++)
+            {
+                _data.Add(i.ToString());
+            }
+            
+            lb.Items = _data;
         }
 
         private void InitializeComponent()
         {
             AvaloniaXamlLoader.Load(this);
         }
+
+        private void Button_OnClick(object sender, RoutedEventArgs e)
+        {
+            _data.Clear();
+
+            for (int i = 0; i < 50; i++)
+            {
+                _data.Add(i.ToString());
+            }
+        }
     }
 }
diff --git a/tests/Avalonia.Markup.UnitTests/Data/BindingTests_ElementName.cs b/tests/Avalonia.Markup.UnitTests/Data/BindingTests_ElementName.cs
index 69dfc6c0622fe559454d693075abd99455959514..86f80266827f6d53312b399b2be5f36b6c3adb4a 100644
--- a/tests/Avalonia.Markup.UnitTests/Data/BindingTests_ElementName.cs
+++ b/tests/Avalonia.Markup.UnitTests/Data/BindingTests_ElementName.cs
@@ -1,5 +1,6 @@
 using System;
 using Avalonia.Controls;
+using Avalonia.Controls.Documents;
 using Avalonia.Data;
 using Avalonia.Markup.Data;
 using Avalonia.UnitTests;
@@ -162,5 +163,42 @@ public void Should_Bind_To_Later_Added_Element()
 
             Assert.Same(source, target.Content);
         }
+
+        [Fact]
+        public void Should_Actually_Work()
+        {
+            TextBlock source;
+
+            var root = new TestRoot
+            {
+                Child = new StackPanel
+                {
+                    Children =
+                    {
+                        (source = new TextBlock
+                        {
+                            Name = "source",
+                            Text = "foo",
+                        })
+                    }
+                }
+            };
+            
+            root.RegisterChildrenNames();
+
+            var binding = new Binding
+            {
+                ElementName = "source",
+                Path = nameof(TextBlock.Text),
+                NameScope = new WeakReference<INameScope>(NameScope.GetNameScope(root))
+            };
+
+            for (int i = 0; i < 1000; i++)
+            {
+                var target = new TextBlock();
+
+                target.Bind(TextBlock.TextProperty, binding);
+            }
+        }
     }
 }