From 764b20b3556d708025a922b6cb9954a4be9fc7c1 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 29 May 2026 12:28:50 +0000
Subject: [PATCH 1/2] Initial plan


From 8221651183babc23b2aa22d450c54fabb4248ac8 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 29 May 2026 12:33:20 +0000
Subject: [PATCH 2/2] Add theme behavior note to SystemBackdropElement sample

Agent-Logs-Url: https://github.com/microsoft/WinUI-Gallery/sessions/7ceec96c-bfd9-4170-884c-54de52cca8c4

Co-authored-by: niels9001 <9866362+niels9001@users.noreply.github.com>
---
 .../SystemBackdropElement/SystemBackdropElementPage.xaml      | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/WinUIGallery/Samples/SystemBackdropElement/SystemBackdropElementPage.xaml b/WinUIGallery/Samples/SystemBackdropElement/SystemBackdropElementPage.xaml
index 682e359c0..2a9171e96 100644
--- a/WinUIGallery/Samples/SystemBackdropElement/SystemBackdropElementPage.xaml
+++ b/WinUIGallery/Samples/SystemBackdropElement/SystemBackdropElementPage.xaml
@@ -53,5 +53,9 @@
                 <controls:ControlExampleSubstitution Key="CornerRadius" Value="{x:Bind CornerRadiusSlider.Value, Mode=OneWay}" />
             </controls:ControlExample.Substitutions>
         </controls:ControlExample>
+        <TextBlock
+            Margin="0,12,0,0"
+            Text="Theme updates for SystemBackdropElement are triggered by app or OS theme changes, not by setting theme directly on the control."
+            TextWrapping="WrapWholeWords" />
     </StackPanel>
 </Page>