STEPS TO REPRODUCE 1. start Wayland session while no mouse is connected to your computer 2. use the apps launcher to search for "nouse" kcm and open it OBSERVED RESULT scroll bar is present despite there is no content to scroll. Compare the attached screenshots. EXPECTED RESULT no scroll bar SOFTWARE/OS VERSIONS Operating System: KDE neon Unstable Edition KDE Plasma Version: 5.17.80 KDE Frameworks Version: 5.66.0 Qt Version: 5.13.2
Created attachment 124548 [details] no mouse is connected
Created attachment 124549 [details] a mouse is connected
Created attachment 127157 [details] standalone Mouse KCM on X11 On X11 unnecessary scroll bar is present regardless a mouse is connected or not. Operating System: KDE neon Unstable Edition KDE Plasma Version: 5.18.80 KDE Frameworks Version: 5.69.0 Qt Version: 5.14.1
https://phabricator.kde.org/D29157 makes this bug irrelevant.