[Problem/Bug]: When using an SVG format image as a menu item icon, it does not appear to be displayed.

What happened?

Discussed in https://github.com/MicrosoftEdge/WebView2Feedback/discussions/4543

^{Originally posted by Yookey May 8, 2024}
Hello:
I created a custom menu item using the following code, but it cannot display SVG format vector icons (bitmap icons can be displayed normally). I carefully read the development documentation, which clearly indicates that SVG format images can be used.
did I make a mistake somewhere?
doc:
https://learn.microsoft.com/en-us/dotnet/api/microsoft.web.webview2.core.corewebview2contextmenuitem.icon?view=webview2-dotnet-1.0.2194-prerelease#microsoft-web-webview2-core-corewebview2contextmenuitem-icon

Importance

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

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

128.0.2739.79

SDK Version

1.0.2739.15

Framework

Winforms

Operating System

Windows 11

OS Version

10.0.22631.4169

Repro steps

private void CoreWebView2_ContextMenuRequested(object sender, CoreWebView2ContextMenuRequestedEventArgs e)
{
    e.MenuItems.Clear();
    if (e.ContextMenuTarget.HasSelection && !string.IsNullOrEmpty(e.ContextMenuTarget.SelectionText.Trim('\n')))
    {
        var item = webViewer.CoreWebView2.Environment.CreateContextMenuItem("Copy Text", GetIcon(iconName), CoreWebView2ContextMenuItemKind.Command);
        e.MenuItems.Add(item);
    }
}

Stream GetIcon(string iconName)
{
    if (string.IsNullOrWhiteSpace(iconName)) return null;
    if (Icons.ContainsKey(iconName))
        return Icons[iconName];
    else
    {
        var bytes = UILayer.Properties.Resources.reply; // <--- this is a test image in SVG format
        Stream stream = new MemoryStream(bytes)  {
            Position = 0
        };
        Icons.Add(iconName, stream);
        return stream;
    }
}

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

Start with the supplied WinForms reproduction around CoreWebView2_ContextMenuRequested, CreateContextMenuItem, and the GetIcon stream, then compare the behavior with the CoreWebView2ContextMenuItem.Icon documentation. Done means establishing why the SVG icon is not displayed in the stated WebView2 runtime and identifying a documented resolution or confirmed product fix.