There were several problems for me on a Plasma laptop. One has been happening for the past several updates, but it's easy to fix, and I figured it would be by now - but it hasn't. On a reboot after the update, Bluetooth is turned off. The solution, of course, is to plug in a dongle for a non-Bluetooth mouse, and connect things again. Easy, but annoying.
Another one to solve, once I knew the solution, is the panel that masqerades as a dock. It starts out about 3/4 " long, with icons that are just colored dots. After I figured it out, finally, all it took was clicking on "Edit enter mode" in the context menu for it to assume its original size and (most of) its original content.
The last issue was that one of the three solitaire games I play was missing from the "dock". I needed to go to favorites, and right-click on the game's icon, then copy it to the screen. From there, I could add it back to the "dock".
These problems were all fixable, but still, they were all annoying. I'd love it if they were gone in some future update.