[Windows] Application.Current.OpenWindow() constantly crashes

[kucint]

Description

Under Windows (Windows 10, Windows 11), trying to create a new window causes application crash.

See attached project:
MauiApp4.zip

No matter what I do, the exception is thrown.
Am I missing something?

Steps to Reproduce

1. uninstall all Visual Studio instances present on the computer.
2. install clean version of Visual Studio Preview (Version 17.2.0 Preview 2.0). This version comes with the MAUI preview 14.
3. create a new MAUI project
4. create new DemoPage, may be empty
5. replace implementation of OnCounterClicked method with following code:
   private void OnCounterClicked(object sender, EventArgs e)
   {
   var page = new DemoPage();
   var wnd = new Window(page);
   Application.Current.OpenWindow(wnd);
   }
6. Run the application on Windows and click the "counter" button.
7. Application crashes with following message:
   

Referred Just-In-Time option does not exists in Visual Studio (I think it existed in the past but has been removed):

Version with bug

Preview 13 (current)

Last version that worked well

Unknown/Other

Affected platforms

Windows, I was not able test on other platforms

Affected platform versions

Windows SDK 10.0.19041

Did you find any workaround?

no

Relevant log output

No response

[jsuarezruiz]

From the exception:

'WinUI: Error creating second Desktop Window on the current process. No more than one Desktop Window is allowed per process.'.

[jfversluis]

As mentioned in the blogpost for preview 11

The Windows App SDK implementation of multi-window will be in an experimental release until release in v1.1 (see roadmap).

We're aware and working on it, but we have to wait until WinUI got their bits ready :)

[kucint]

I see, thanks you for info!
I am looking forward for the incoming MAUI release.