Plasma 6.1 on Wayland now has a feature that “remembers” what you were doing in your last session like it did under X11. Although this is still work in progress, If you log off and shut down your computer with a dozen open windows, Plasma will now open them for you the next time you power up your desktop, making it faster and easier to get back to what you were doing.
Maybe I’m just a boomer but this feature is so incredibly annoying to me and is one of the first things I disable on new installs
http://i2.kym-cdn.com/photos/images/original/000/843/486/290.jpg