touchpad settings, like natural scrolling and speed, reset a lot. an obvious one being on disconnect - when reconnected, it behaves as on defaults even as systemsettings reports the settings I want. so I turn device enabled on and off for the apply button to become available and click apply and it's back to my settings
STEPS TO REPRODUCE
1. apply custom (non-default) touchpad settings
2. disconnect touchpad (I'm using a magic trackpad in this case so I just turn it off)
touchpad settings behave as if they were set to their defaults but systemsettings reflects the custom settings
touchpad behaving with the custom settings
Linux/KDE Plasma: Fedora 32
KDE Plasma Version: 5.18.3
KDE Frameworks Version: 5.68.0
Qt Version: 5.13.2
this has been happening for a long time since many releases back but it's finally driven me crazy enough for me to file the bug, as it happens a lot, not just on disconnects but that's an easy deterministic one to try
see related #421069 and #419533
Sounds a bit like Bug 414559.
Does this happen if you manually run `sudo udevadm trigger -s input` in a terminal window?
(In reply to Nate Graham from comment #2)
> Sounds a bit like Bug 414559.
> Does this happen if you manually run `sudo udevadm trigger -s input` in a
> terminal window?
yup, it does
*** This bug has been marked as a duplicate of bug 414559 ***