diff --git a/src/TeamsISO.App.WinUI/Views/MainWindow.xaml b/src/TeamsISO.App.WinUI/Views/MainWindow.xaml
index 4f863c9..d41407f 100644
--- a/src/TeamsISO.App.WinUI/Views/MainWindow.xaml
+++ b/src/TeamsISO.App.WinUI/Views/MainWindow.xaml
@@ -377,11 +377,14 @@
                 </StackPanel>
             </Border>
 
-            <!-- Settings drawer host removed temporarily to isolate the
-                 XAML parse error blocking launch on WindowsAppSDK 1.8.
-                 The drawer XAML itself is unchanged and remains in
-                 Views/SettingsDrawer.xaml. Re-host once the parse error
-                 is triaged. -->
+            <!-- SettingsDrawer host deferred: even with Visibility=Collapsed
+                 the SettingsDrawer.xaml parse fires at constructor time and
+                 crashes the WinUI 3 XAML parser. Suspect the NavigationView's
+                 IsSelected="True" attribute on its first NavigationViewItem
+                 firing OnTabSelectionChanged before the code-behind is ready.
+                 Re-host after replacing the NavigationView with a simpler
+                 tab strip or after fixing the selection-change handler
+                 signature for WinUI 3 1.8. -->
 
             <!-- ─── Status bar ─── -->
             <Grid Grid.Row="4"
diff --git a/src/TeamsISO.App.WinUI/Views/MainWindow.xaml.cs b/src/TeamsISO.App.WinUI/Views/MainWindow.xaml.cs
index 1a795f2..32f5750 100644
--- a/src/TeamsISO.App.WinUI/Views/MainWindow.xaml.cs
+++ b/src/TeamsISO.App.WinUI/Views/MainWindow.xaml.cs
@@ -61,13 +61,13 @@ public sealed partial class MainWindow : Window
     }
 
     /// <summary>
-    /// Drawer toggle stubbed pending XAML-parse-error triage. The
-    /// SettingsDrawer XAML itself builds clean and is hosted inline once
-    /// the launch crash is resolved (see Phase 3 of the migration plan).
+    /// Settings drawer toggle. Currently a no-op because the drawer host
+    /// can't be inlined in MainWindow.xaml without crashing the XAML parser;
+    /// see the comment in MainWindow.xaml at the drawer placeholder.
     /// </summary>
     private void OnSettingsClick(object sender, RoutedEventArgs e)
     {
-        // No-op stub until SettingsDrawerHost re-hosts in MainWindow.xaml.
+        // No-op until SettingsDrawer.xaml is simplified for WinUI 3 1.8.
     }
 
     /// <summary>