In the last week, KiCad stopped working on both of my Linux systems. On the Ubuntu laptop, the interface has huge delays and Gnome keeps asking me if I want to kill it. On the Kubuntu desktop, it crashes when trying to load a file, after warning that it can't parse a css style file inside of a snap firefox install. The first one is probably a wayland incompatibility, I'm a little surprised their official recommendation isn't to just give up and run it on Windows.