The window closes on the Linux (Debian) platform

[Tartilla-TAIGO]

Platform: Linux

If you do not specify loadUrl when starting the window, it may make it impossible to open the window on Linux (Debian). The application simply closes, although this does not happen on Windows.

A temporary solution:

    builder.WebHost.UseUrls("http://localhost:20045");
    ... 
        var browserWindow = await Electron.WindowManager.CreateWindowAsync(new BrowserWindowOptions
    {
        Width = 1152,
        Height = 940,
    }, "http://localhost:20045");

[markatosi]

This also resolves an issue when running on an intel Mac although the electron window does display the Blazor content will not be rendered without explicitly setting the Url as you have described.