[Problem/Bug]: How to show Desktop Acrylic backdrop in Context menu and download dialog?

[Gaoyifei1011]

What happened?

How to show Desktop Acrylic backdrop in Context menu and download dialog?
如何在右键菜单和下载对话框显示 Desktop Acrylic 背景色

Microsoft Edge can show desktop acrylic backdrop
Microsoft Edge 可以显示 desktop acrylic 背景色

WebView2 can not show desktop acrylic backdrop
WebView2 没有显示 desktop acrylic 背景色

Importance

Important. My app's user experience is significantly compromised.

Runtime Channel

Stable release (WebView2 Runtime), Prerelease (Edge Canary/Dev/Beta)

Runtime Version

129.0.2792.12

SDK Version

1.0.2739.15

Framework

WinUI3/WinAppSDK

Operating System

Windows 11

OS Version

10.0.26100

Repro steps

None

Repros in Edge Browser

Yes, issue can be reproduced in the corresponding Edge version

Regression

Don't know

Last working version (if regression)

SDK Version 1.0.2739.15