KSysGuardProcessList: Don't call winId() on the window()
All API (e.g. KAuth) operates on QWindow these days. Doing winId() on a child widget causes funky input and repaint problems when the widget is forcefully turned into a native window.
Thanks @nicolasfella for the pointer (you gave me weeks ago) :D
My Systemmonitor (Ctrl+Esc) repaints properly now.
I still get Polkit prompts (one of the users of the ProcessController::window
) when trying to kill someone else’s process. Needs testing on X11, though, I guess.