diff --git a/samples/BindingDemo/GenericMarkupExtension.cs b/samples/BindingDemo/GenericMarkupExtension.cs
new file mode 100644
index 0000000000..aed0700cb8
--- /dev/null
+++ b/samples/BindingDemo/GenericMarkupExtension.cs
@@ -0,0 +1,14 @@
+using System;
+using Avalonia.Markup.Xaml;
+
+namespace BindingDemo;
+
+internal class GenericMarkupExtension<T> : MarkupExtension
+{
+    public T Value { get; set; }
+
+    public override object ProvideValue(IServiceProvider serviceProvider)
+    {
+        return $"{Value?.GetType().Name}: {Value}";
+    }
+}
diff --git a/samples/BindingDemo/GenericValueConverter.cs b/samples/BindingDemo/GenericValueConverter.cs
new file mode 100644
index 0000000000..ff0e9c153e
--- /dev/null
+++ b/samples/BindingDemo/GenericValueConverter.cs
@@ -0,0 +1,30 @@
+using System;
+using System.Globalization;
+using Avalonia.Data.Converters;
+
+#nullable enable
+
+namespace BindingDemo;
+
+public class GenericValueConverter<T> : IValueConverter
+{
+    public GenericValueConverter()
+    {
+        
+    }
+
+    public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
+    {
+        if (value is T)
+        {
+            return $"{typeof(T).Name}: {value}";
+        }
+
+        return null;
+    }
+
+    public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
+    {
+        throw new NotSupportedException();
+    }
+}
diff --git a/samples/BindingDemo/MainWindow.xaml b/samples/BindingDemo/MainWindow.xaml
index a00bed37f9..f14ad59cd5 100644
--- a/samples/BindingDemo/MainWindow.xaml
+++ b/samples/BindingDemo/MainWindow.xaml
@@ -120,5 +120,20 @@
         <Button Content="Command Method Do" Command="{Binding Do}" x:Name="ToDo"/>
       </StackPanel>
     </TabItem>
+    <TabItem Header="Advanced">
+      <TabItem.Resources>
+        <local:GenericValueConverter x:Key="BrushConverter" x:TypeArguments="SolidColorBrush"/>
+      </TabItem.Resources>
+      <StackPanel>
+        <!-- Tests for #10856  -->
+        <TextBlock Text="{local:GenericMarkupExtension, Value=Red, x:TypeArguments=Color}"/>
+        <TextBlock HorizontalAlignment="Left"
+                   Text="{Binding $self.Background, Converter={StaticResource BrushConverter}}">
+          <TextBlock.Background>
+            <SolidColorBrush Color="Yellow"/>
+          </TextBlock.Background>
+        </TextBlock>
+      </StackPanel>
+    </TabItem>
   </TabControl>
 </Window>