RE: KDE scripts: Any reason this won't work in Qubes?

I can’t seem to get this script to work:

The stock KDE invert script stopped working with an update as well.

Is there a constraint with Xen hypervisor that would prevent them from working? Or do I need to upgrade the renderer? Or something else?

Did you switch to Plasma 6 with the update?

There is a pull request to fix with Plasma 6 Adapt to KWin 6 by skbeh · Pull Request #11 · murat-cileli/kwin-grayscale-effect · GitHub

Plasma shows version 5.27.8.