SUMMARY Some touchpad settings, like "Disable touchpad when mouse is plugged in" and the responding blacklist settings disappeared from settings. This might be related to libinput replacing xf86-input-synaptics. (However, for those settings which were changed when they are still avaliable via systemsettings5, they are still in effect.) STEPS TO REPRODUCE 1. Open touchpad settings (or run `kcmshell5 kcm_touchpad`) OBSERVED RESULT Only basic touchpad settings, including "Device", "General", "Pointer speed" etc. are present. No tab on top of the setting page. EXPECTED RESULT Several tabs are present as [1] shows. [1]. https://userbase.kde.org/System_Settings/Touchpad SOFTWARE/OS VERSIONS Linux/KDE Plasma: Arch Linux 5.4.1-arch1-1 KDE Plasma Version: 5.17.3 KDE Frameworks Version: 5.64.0 Qt Version: 5.13.2 ADDITIONAL INFORMATION
Seems fixed by now. Closing this bug.