Where to begin troubleshooting not working on Ubuntu 22.04

And that cheque is totally in the mail (:

A promise to best-effort fix critical security bugs in 2022 software is not the same thing as having 2026’s hoverboards work with it…

Wayland and screen capture is a long trail of tears. Google is full stories about the bodies lining that road.

Did you try the kdenlive documentation on exactly this?