Kazam creates mp4 file with black screen and no sound on playback with VLC

Ubuntu 22.04 using Wayland.
Kazam creates mp4 file with black screen and no sound on playback with VLC. It does it for a few seconds of recording or even much longer.
I used Firefox to play from:
https://www.channel4.com/programmes/astrid-murder-in-paris/on-demand/74035-001

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: kazam 1.4.5-5
ProcVersionSignature: Ubuntu 5.19.0-41.42~22.04.1-generic 5.19.17
Uname: Linux 5.19.0-41-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.4
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Wed May 3 09:00:41 2023
InstallationDate: Installed on 2022-08-21 (254 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
PackageArchitecture: all
SourcePackage: kazam
UpgradeStatus: Upgraded to jammy on 2022-10-06 (208 days ago)