MAUI Windows app launches as white screen and hangs

Description

I created a new .NET MAUI Blazor app, added minimal customization (details below) and ran it on Windows. When I launched it, it launched as a white rectangle and was hanging.

Here’s the app (white screen on left), as well as the VS debugger, which I “paused” the app on to get a dump:

I captured a dump of the hung process (accessible only within Microsoft): DMP file

Steps to Reproduce

1. Create new .NET MAUI Blazor app
2. Replace the code in MainPage.xaml.cs with the following: (might not even be relevant, but I happened to do it)

   public MainPage()
   {
   	InitializeComponent();
   
       blazorWebView.BlazorWebViewInitialized += BlazorWebView_BlazorWebViewInitialized;
   }
   
   private void BlazorWebView_BlazorWebViewInitialized(object sender, Microsoft.AspNetCore.Components.WebView.BlazorWebViewInitializedEventArgs e)
   {
   #if WINDOWS
       var webview2 = e.WebView;
       webview2.CoreProcessFailed += Webview2_CoreProcessFailed;
   #endif
   }
   
   #if WINDOWS
   private void Webview2_CoreProcessFailed(Microsoft.UI.Xaml.Controls.WebView2 sender, Microsoft.Web.WebView2.Core.CoreWebView2ProcessFailedEventArgs args)
   {
       // log this event to see if it's the cause of the failure
   }
   #endif
   

3. Run the app (with debugger, but not sure if it’s relevant)

Note: This repos only rarely. Multiple people have seen it.

Link to public reproduction project repository

N/A

Version with bug

7.0.86

Last version that worked well

Unknown/Other

Affected platforms

Windows

Affected platform versions

Windows 11

Did you find any workaround?

If you re-run the app, chances are it will work. It fails very randomly.

Relevant log output

No response