Copilot key remapped to Ctrl via MS PowerToys does not work on Emacs

Just got new laptop -- Acer Swift Lite 14 running Windows Home 11. The machine comes with Copilot key in the place of right ctrl.

With suggestion on internet I can use MS PowerToys to remap the shortcut from Copilot key (which PowerToys detected as Win (Left) + Shift (Left) + F23) to Ctrl (Right)

The remapping works fine in any app except some cases in Emacs.

Simple case like C-a (move-beginning-of-line) works fine.

But when there is any following non Ctrl-sequence like C-x b, Emacs will report error like "C-x <lwindow> is undefined"

Looks like when I release the Copilot key (before press next key), for some reason, Emacs detects a <lwindow> key press. No idea why.

I have to add shortcut with <lwindow> like this to workaround this.

(global-set-key (kbd "C-x <lwindow> b") 'switch-to-buffer) 

Anybody, have better suggestion to properly fix this ?

Update

I use Lazarus to print out what keycode produced when Copilot is pressed after PowerToys shortcut mapping. Below is the result

1. <lwindow> key down

2. <shift> key down

3. "char 255" key down

4. "char 255" key up

5. <shift> key up

6. <lwindow> key up

7. <ctrl> key down

8. <ctrl> key up

9. <lwindow> key down

10. "char 255" key down

11. "char 255" key up

12. <lwindow> key up

PowerToys did produce <lwindow> key sequence (1 - 6) before <ctrl> (7 - 8) And also after (9 - 12)

As far as I know Emacs has code in w32-win.el to ignore <lwindow>, because generally <lwindow> will make active Window switch to other and Emacs will never receive <lwindow> key up event. But this case it is not.