diff --git a/SudokuSolver/App.xaml b/SudokuSolver/App.xaml
index 92231d1..590545a 100644
--- a/SudokuSolver/App.xaml
+++ b/SudokuSolver/App.xaml
@@ -11,12 +11,6 @@
 
             <x:Double x:Key="cell_size">50</x:Double>
 
-            <!-- work around for https://github.com/microsoft/microsoft-ui-xaml/issues/8756 -->
-            <Style TargetType="MenuFlyoutPresenter" BasedOn="{StaticResource DefaultMenuFlyoutPresenterStyle}">
-                <Setter Property="Background" Value="{ThemeResource FlyoutPresenterBackground}"/>
-                <Setter Property="BorderBrush" Value="{ThemeResource FlyoutBorderThemeBrush}"/>
-            </Style>
-
         </ResourceDictionary>
     </Application.Resources>
 </Application>
diff --git a/SudokuSolver/Installer/inno_script.iss b/SudokuSolver/Installer/inno_script.iss
index f882f0b..0797030 100644
--- a/SudokuSolver/Installer/inno_script.iss
+++ b/SudokuSolver/Installer/inno_script.iss
@@ -335,10 +335,10 @@ begin
   if not FileExists(ExeFilePath) then
     ExtractTemporaryFile('CheckWinAppSdk.exe');
 
-  // WinAppSdk 1.4.0 is 4000.964.11.0
-  // Check for any 1.4.n version where n >= 0
+  // WinAppSdk 1.4.1 is 4000.986.611.0
+  // Check for any 1.4.n version where n >= 1
 
-  if not Exec(ExeFilePath, '4000.964.11.0' + ' ' + GetPlatformParamStr, '', SW_HIDE, ewWaitUntilTerminated, ResultCode) then
+  if not Exec(ExeFilePath, '4000.986.611.0' + ' ' + GetPlatformParamStr, '', SW_HIDE, ewWaitUntilTerminated, ResultCode) then
     Log('Exec CheckWinAppSdk.exe failed: ' + SysErrorMessage(ResultCode));    
 
   Result := ResultCode = 0;
diff --git a/SudokuSolver/SudokuSolver.csproj b/SudokuSolver/SudokuSolver.csproj
index c163f59..0cf5ee9 100644
--- a/SudokuSolver/SudokuSolver.csproj
+++ b/SudokuSolver/SudokuSolver.csproj
@@ -23,7 +23,7 @@
     <PackageReference Include="Microsoft.Windows.CsWin32" Version="0.3.18-beta">
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.WindowsAppSDK" Version="1.4.230822000" />
+    <PackageReference Include="Microsoft.WindowsAppSDK" Version="1.4.230913002" />
 	<!-- the build tools are only required for packaged builds to run...
 	<PackageReference Include="Microsoft.Windows.SDK.BuildTools" Version="10.0.22621.755" />
 	-->
diff --git a/SudokuSolver/ViewModels/PuzzleViewModel.cs b/SudokuSolver/ViewModels/PuzzleViewModel.cs
index 85751b4..acaec0c 100644
--- a/SudokuSolver/ViewModels/PuzzleViewModel.cs
+++ b/SudokuSolver/ViewModels/PuzzleViewModel.cs
@@ -92,7 +92,7 @@ public void UpdateCellForKeyDown(int index, int newValue)
                 UpdateView();
                 undoHelper.Push(model);
                 IsModified = true;
-                RaiseCanExecuteChanged();
+                UpdateMenuItemsDisabledState();
             }
             else
             {
@@ -124,7 +124,7 @@ public void Open(Stream stream)
         {
             UpdateView();
             undoHelper.Push(model);
-            RaiseCanExecuteChanged();
+            UpdateMenuItemsDisabledState();
         }
     }
 
@@ -148,7 +148,7 @@ public void New()
         UpdateView();
         undoHelper.Push(model);
         IsModified = false;
-        RaiseCanExecuteChanged();
+        UpdateMenuItemsDisabledState();
     }
 
     public bool ShowPossibles
@@ -224,7 +224,7 @@ public void ExecuteUndo(object? param)
             model = undoHelper.PopUndo();
             UpdateView();
             IsModified = true;
-            RaiseCanExecuteChanged();
+            UpdateMenuItemsDisabledState();
         }
     }
 
@@ -238,7 +238,7 @@ public void ExecuteRedo(object? param)
             model = undoHelper.PopRedo();
             UpdateView();
             IsModified = true;
-            RaiseCanExecuteChanged();
+            UpdateMenuItemsDisabledState();
         }
     }
 
@@ -249,18 +249,25 @@ public void Puzzle_SelectedIndexChanged(object sender, Views.Cell.SelectionChang
         else if (selectedIndex == e.Index)
             selectedIndex = -1;
 
-        RaiseCanExecuteChanged();
+        UpdateMenuItemsDisabledState();
     }
 
-    private void RaiseCanExecuteChanged()
+    private void UpdateMenuItemsDisabledState()
     {
-        UndoCommand.RaiseCanExecuteChanged();
-        RedoCommand.RaiseCanExecuteChanged();
-        CutCommand.RaiseCanExecuteChanged();
-        CopyCommand.RaiseCanExecuteChanged();
-        DeleteCommand.RaiseCanExecuteChanged();
-        PasteCommand.RaiseCanExecuteChanged();
-        MarkAsGivenCommand.RaiseCanExecuteChanged();
+        // an unfortunate work around for https://github.com/microsoft/microsoft-ui-xaml/issues/8894
+        // The menu flyout item will loose it's foreground color if disabled from within the ICommands execute
+        // method when the system theme is light and the app's theme is dark. Fire and forget, so always need to
+        // call the CanExecute method first when executing to check it's still valid to execute. 
+        Task.Run(() =>
+        {
+            UndoCommand.RaiseCanExecuteChanged();
+            RedoCommand.RaiseCanExecuteChanged();
+            CutCommand.RaiseCanExecuteChanged();
+            CopyCommand.RaiseCanExecuteChanged();
+            DeleteCommand.RaiseCanExecuteChanged();
+            PasteCommand.RaiseCanExecuteChanged();
+            MarkAsGivenCommand.RaiseCanExecuteChanged();
+        });
     }
 
     private bool CanCutCopyDelete(object? param = null) => (selectedIndex >= 0) && Cells[selectedIndex].HasValue;
diff --git a/SudokuSolver/Views/MainWindow.xaml b/SudokuSolver/Views/MainWindow.xaml
index b0a56c4..6c73830 100644
--- a/SudokuSolver/Views/MainWindow.xaml
+++ b/SudokuSolver/Views/MainWindow.xaml
@@ -101,8 +101,13 @@
                         <KeyboardAccelerator Key="V" Modifiers="Control"/>
                     </MenuFlyoutItem.KeyboardAccelerators>
                 </MenuFlyoutItem>
-                <MenuFlyoutItem Text="Delete" Command="{x:Bind Puzzle.ViewModel.DeleteCommand}" AccessKey="D">
-                    <!-- no keyboard accelerator because it's already implemented by a focused cell -->
+
+                <!-- remove work in progress, bug fix release required -->
+
+                <!--<MenuFlyoutItem Text="Delete" Command="{x:Bind Puzzle.ViewModel.DeleteCommand}" AccessKey="D">
+                    -->
+                <!-- no keyboard accelerator because it's already implemented by a focused cell -->
+                <!--
                 </MenuFlyoutItem>
 
                 <MenuFlyoutSeparator />
@@ -119,7 +124,7 @@
                     <MenuFlyoutItem.KeyboardAccelerators>
                         <KeyboardAccelerator Key="M" Modifiers="Control"/>
                     </MenuFlyoutItem.KeyboardAccelerators>
-                </MenuFlyoutItem>
+                </MenuFlyoutItem>-->
             </MenuBarItem>
 
             <MenuBarItem Title="View" AccessKey="V">