diff --git a/src/Avalonia.Controls/TextBox.cs b/src/Avalonia.Controls/TextBox.cs
index 3ec3d6ed5b..f73725f95a 100644
--- a/src/Avalonia.Controls/TextBox.cs
+++ b/src/Avalonia.Controls/TextBox.cs
@@ -256,6 +256,8 @@ namespace Avalonia.Controls
             {
                 _presenter?.ShowCaret();
             }
+
+            e.Handled = true;
         }
 
         protected override void OnLostFocus(RoutedEventArgs e)
@@ -269,6 +271,7 @@ namespace Avalonia.Controls
         protected override void OnTextInput(TextInputEventArgs e)
         {
             HandleTextInput(e.Text);
+            e.Handled = true;
         }
 
         private void HandleTextInput(string input)