I've encountered the same KDE bug in NixOS though from what I understood when I did some digging[0][1] it doesn't manifest on distros like Fedora.
Now I'm using Cinnamon until the bug gets fixed which I enjoy too but it doesn't come close to the ease of use of KDE. And when I say ease of use on KDE I refer to the fact that out of the box you can pretty much do everything you need to without having to search for extensions or hunt for settings, someone already thought of what you wanted to do and made it straightforward to do. Sure it's overwhelming to be presented with a lot of things at once e.g. the screen capture UI but when you need to do something that's not the base case it's easy to see that the UI has got you covered.
[0]: https://www.reddit.com/r/NixOS/comments/1pdtc3v/kde_plasma_i...