I have never been happier to be a long time Linux user. Our systems are working significantly better than ever before and I have personally converted more people to Linux in the last year than the 15 years before that.
they tried to do something with remembering "how you left things" between sessions, and even when disabled things are still weird...
Also some power management related hooks are not working as well as before. Like if you put the computer to sleep at night, and wake it up in the morning, the automatic dark-to-light theme switch doesn't trigger. at least not always.
Still the best system to work with though!