Hi all! i really didn’t discover what/how the config stopped working, but just fixed following the instructions beneath from the link [http://unix.stackexchange.com/questions/9973/configuring-mouse-for-rightleft-button-simulating-middle-click-for-copy-paste#9992](link url)
The third mouse button can be enabled system wide by adding a file /etc/X11/xorg.conf.d/20-3rdbutton.conf with the following content:
Identifier "middle button"
Option “MiddleEmulation” "on"
It seems that the problem only happened to me, that’s weird that even downgrading ALL the packages to a day before the issue didn’t solved the problem,…
But now everything is fine, and if someone else have the problem can fix following the instructions on the link.
Antergos (default OS) - WIN10 (abandoned)
I3wm - Mate desktop
AMD - A4 7300 Radeon graphics
16 GB ram
HD 1 TB
Linux newbie since 06/2016