I have been using it for the past 3 days without any problems.
This bug is not fixed so do not install the Cisco OpenH264 repository.
If you need to install Google Chrome, install it from the repository because if you download it from Google it will never be updated.
I have installed a few things inside the toolbox (Simple Scan) and it works as expected.
Silverblue 31 Beta includes the AMD Navi firmware on the installation media so my Radeon 5700 XT works out of the box.