One of the the less apparent omissions in Plasma’s Wayland session compared to X was the lack of a prompt for terminating an unresponsive app. Of course, you should never see one because any decent app will just crash and quit rather than get stuck. Nevertheless, over the course of three evenings I spent way too much time making the “KWin Killer Helper” work on Wayland and while at it revamped its user interface entirely.
