DownloadStarting event not firing when selecting Screenshot > Save from the context menu

[mikkelmogensen]

What happened?

Run the code and open context menu > Screenshot > Save

Expected behavior:
MessageBox shows and a lossless png, webp or avif is generated that can be directed with ResultFilePath

Actual behavior:
MessageBox does not show and a jpeg file is placed in users download folder

Importance

Moderate. My app's user experience is affected, but still usable.

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

No response

SDK Version

No response

Framework

WPF

Operating System

Windows 11

OS Version

No response

Repro steps

using System.Windows;
using Microsoft.Web.WebView2.Wpf;
using Microsoft.Web.WebView2.Core;
public partial class App: Window {
public App() {
var wv = new WebView2();
Dispatcher.Invoke(() => {
wv.EnsureCoreWebView2Async(null);
});
Content = wv;
wv.CoreWebView2InitializationCompleted += (o2, e2) => {
wv.Source = new Uri("https://google.com");
wv.CoreWebView2.DownloadStarting += (o, e) => {
MessageBox.Show("----");
};
};
}
[STAThread]
static void Main(string[] sa) {
new Application().Run(new App());
}
}

Repros in Edge Browser

No, issue does not reproduce in the corresponding Edge version

Regression

No, this never worked

Last working version (if regression)

No response