SUMMARY If "Scrolling up on active tasks" is set to "Opens a new instance" it maximizes the current window and opens a new instance. Any of the two other options just maximizes the window. Setting "Scrolling up on inactive window: Restores window or group" does not change that the window just maximizes. Same on X11 and Wayland. I have not tried purging all kde .config-s, but will if nobody can reproduce this. Note that scrolling up on an inactive xterm not only maximizes it but also does not refresh its window properly, making it look glitchy. This does not happen on other (gtk/qt) X11 applications that i tried. STEPS TO REPRODUCE 1. Scroll up on any task, active or inactive, that was not maximized before OBSERVED RESULT The window is now maximized EXPECTED RESULT The window should be restored SOFTWARE/OS VERSIONS Linux/KDE Plasma: Slackware 15.0 (unreleased yet) KDE Plasma Version: 5.27.5 KDE Frameworks Version: 5.106.0 Qt Version: 5.15.9
Can't reproduce. Do you by any chance have any window rules or 3rd-party KWin scripts installed?
My apologies. It is a problem with a plasmoid/widget/applet called "Mouse wheel Window Control". During troubleshooting i ran across https://bugs.kde.org/show_bug.cgi?id=388614 (Add possibility to Minimize/Restore windows with Mouse scroll on Task Manager). It seems this will not be added to official. Again, sorry for wasting time.