Not even a week after the last release, another stable Steam-Client 14.09.2021 has been released for Linux with even more improvements and bugfixes:

Steam Client Update, September 14 A new Steam client has been released and will be automatically downloaded. Library Stop displaying a demo banner in the header for certain titles that are not demos. Linux Scout runtime 0.20210906.1: Improve compatibility with deprecated environment variable setting SDL_AUDIODRIVER=pulse (steam-runtime#452, steam-runtime#459) Use readlink -f instead of realpath for better compatibility with Ubuntu 14.04 Improve handling of OSs that do not install zenity Heavy runtime 0.20210907.0: Add libcups.so to the runtime (steam-for-linux#8031) Steam Input Fix an issue with analog controls in Dynasty Warriors 9