The touchpad widget is fine, but it neither the systemsettings seem to offer an option to set a hotkey to activate- or deactivate the touchpad. The only option in the touchpad applet offers to open the touchpad widget. :-/ I believe in ealier versions (some versions prior to 5.18.4 on Manjaro) Fn+F11 worked by default.
I see one such option ("Toggle Touchpad" in System Settings > Shortcuts > KDE Daemon. Do you see that? "KDE Daemon" is a bad name, but that was just fixed today. :)
(In reply to Nate Graham from comment #1) > I see one such option ("Toggle Touchpad" in System Settings > Shortcuts > > KDE Daemon. Do you see that? > > "KDE Daemon" is a bad name, but that was just fixed today. :) Yes, thanks found it. I thought I had filtered the hotkeys for "touchpad" but I might have had a typo I didn't notice. "KDE Daemon" is definitely a bad name. What will it be called in the future?
(In reply to Postix from comment #2) > "KDE Daemon" is definitely a bad name. What will it be called in the future? "Touchpad" :)