VisualStudio 2022 tries to attach another debugger when App.xaml.cs tries to activate two Windows:

protected override void OnLaunched(Microsoft.UI.Xaml.LaunchActivatedEventArgs args)
{
    m_window = new MainWindow();
    m_window.Activate();

    m_window = new MainWindow();
    m_window.Activate();
}

Output: The program '[26132] DebuggerCrash.exe' has exited with code 3221225477 (0xc0000005) 'Access violation'.

This happens (DebuggerCrash project) using

• Microsoft.WindowsAppSDK 1.4.231008000
• Microsoft.Windows.SDK.BuildTools 10.0.22621.756

This does not happen (DebuggerNoCrash project) using

• Microsoft.WindowsAppSDK 1.3.230602002
• Microsoft.Windows.SDK.BuildTools 10.0.22621.755

Both projects run without any issues if started WITHOUT debugging from VisualStudio 2022