I remarked that ctrl-alt-backspace closes the session on Manjaro KDE Plasma.
This is very unfortunate as I often press those keys while moving / deleting worlds in the terminal and it just makes me lose whatever I was doing.
How can I disable it? I tried to go in settings > shortcuts but there is no matching shortcut.
Check in System Settings > Input Devices > Keyboard > Advanced (tab) > check the option Configure keyboard options > search for Key sequence to kill the x server and uncheck the option for the shortcut.