Windows 11 Taskbar Extra Buttons

Question

https://github.com/microsoft/Windows-classic-samples/tree/main/Samples/Win7Samples/winui/shell/appshellintegration/TabThumbnails

I build this sample about taskbar tab thumbnails. it works well on Win7/8/8.1/10.

But on Win11, follow these steps:

1. open TabThumbnails.exe
2. New Tabs 
3. Win+Ctrl+right Change to other virtual desktop
4. Win+Ctrl+left Back to virtual desktop
5. Taskbar show extra buttons

When after changed virtual desktop, like this: