SUMMARY
At least with the ASUS Transformer Book T300 Chi, when connecting the dock, the touchpad settings aren’t applied to the touchpad of the dock, the default touchpad parameters are used, and it is necessary to edit touchpad configuration and use apply to finally have the right parameters applied.

The problem happens on X.org, I don’t if it happens on Wayland.

STEPS TO REPRODUCE
1. Customize touchpad settings
2. Connect dock with touchpad in bluetooth
3. Touchpad settings aren’t applied; default settings are used

OBSERVED RESULT
Touchpad settings aren’t applied to bluetooth dock.

EXPECTED RESULT
Touchpad settings are applied to bluetooth dock as soon as connected.


SOFTWARE/OS VERSIONS
Operating System: Manjaro Linux 
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.70.0
Qt Version: 5.15.0
Kernel Version: 5.6.16-1-MANJARO

ADDITIONAL INFORMATION
It looks like this old RESOLVED FIXED bug:
https://bugs.kde.org/show_bug.cgi?id=356923