After upgrading Xorg-x86-xinput I can’t scroll by pressing center slider. I have also installed xev and button pressing on center slider didn’t generate events.
I have a different issue, but maybe yours is related.
First, I cannot use tap for clicking. Fair enough, I should just have to go to Input Devices (in KDE) and change some settings under “Touchpad.” Except it is all greyed out, and I get an error message stating “Synaptics driver is not installed (or is not used)”. I seem to have all the drivers, so I wonder why it is not loaded. I do not see any pertinent errors on the logs.
I saw that, and removing xf86-input-libinput did the trick.
Thanks!