App with custom titlebar crashes after a window is closed.

[kvega005]

Describe the bug

This line of code: WindowChrome_Partial.cpp (L102) causes app which uses a custom title bar to crash. This code should not be invoked after the window is closed. I believe it is a regression, because my code has not changed but the app has started crashing.

Stack trace:

• combase.dll!RoFailFastWithErrorContextInternal2(HRESULT hrError, unsigned long cStowedExceptions, _STOWED_EXCEPTION_INFORMATION_V2 * * aStowedExceptionPointers) Line 1469 C++
• Microsoft.UI.Xaml.dll!FailFastWithStowedExceptions(HRESULT hrError, unsigned long cStowedExceptions, _STOWED_EXCEPTION_INFORMATION_V2 * * aStowedExceptionPointers) Line 1508 C++
• Microsoft.UI.Xaml.dll!DirectUI::WindowChrome::SetTitleBar(ABI::Microsoft::UI::Xaml::IUIElement * titleBar) Line 102 C++
• Microsoft.UI.Xaml.dll!DirectUI::DesktopWindowImpl::SetTitleBarImpl(ABI::Microsoft::UI::Xaml::IUIElement * pTitleBar) Line 1289 C++
• [Inline Frame] Microsoft.UI.Xaml.dll!DirectUI::Window::SetTitleBarImpl(ABI::Microsoft::UI::Xaml::IUIElement *) Line 815 C++
• Microsoft.UI.Xaml.dll!DirectUI::WindowGenerated::SetTitleBar(ABI::Microsoft::UI::Xaml::IUIElement * pTitleBar) Line 388 C++
• Microsoft.UI.Xaml.dll!DirectUI::DesktopWindowImpl::CloseImpl() Line 454 C++
• [Inline Frame] Microsoft.UI.Xaml.dll!DirectUI::Window::CloseImpl() Line 269 C++
• Microsoft.UI.Xaml.dll!DirectUI::WindowGenerated::Close() Line 260 C++
• [Managed to Native Transition]
• Microsoft.WinUI.dll!ABI.Microsoft.UI.Xaml.IWindowMethods.Close(WinRT.IObjectReference _obj) Unknown
• Microsoft.WinUI.dll!Microsoft.UI.Xaml.Window.Close() Unknown

Steps to reproduce the bug

1. Ensure you are running a recent Windows Canary build.

2. Launch Windows Sandbox.

3. Restart the container.
   

4. Observe the crash.

Expected behavior

No response

Screenshots

No response

NuGet package version

WinUI 3 - Windows App SDK 1.6.1: 1.6.240923002

Windows version

Windows Insider Build (xxxxx)

Additional context

No response