When I upgrade the system in Solus KDE the touchpad tap to click stop working, after restart works normally again but this happens every time I upgrade no matter the upgrade always the same since I started using the KDE edition 2 months ago.
Yes by every update, Solus kde is fully updated right now and it happens since first time I installed it, from the very begging with the first update until the last one. Is the kde edition without any additions for example even if its an update of a single package the problem happens and remains until reboot. The netbook is a hp stream 11.
mmh k, doesn't help that even Nate hasn't an idea what could cause this. could you try running the next update via terminal and run after completion sudo usysconf run -f to see if this maybe fixes it? I cannot trigger it with my Notebook
Maybe you are looking in the wrong place? I sometimes loose middle click when pressing both buttons. So I enable it with xinput at every boot.
So you could try typing xinput, then finding name of your touchpad and doing something like xinput list-props "AlpsPS/2 ALPS DualPoint TouchPad".
Then you set a property like xinput set-prop "AlpsPS/2 ALPS DualPoint TouchPad" "libinput Middle Emulation Enabled" 1
Your problem still might be Plasma specific, but it is worth a try.