I was running build 0430 and decided to reboot for the latest updates and when trying to open Kate am getting the error Cannot find the program ‘Kate’. It is not showing as installed and even after installing it from Flathub it still shows the same message. I’ve tried this on both the 0508 and 0509 builds, when I boot back to my 0430 build it works fine.
This is a know issue currently, which will be fixed once fix: IMAGE_NAME Build arg should not have -main or -nvidia by m2Giles · Pull Request #860 · ublue-os/main · GitHub is merged and a new build is out.