Plasma 6: Restart and Shutdown not working

Support KDE Plasma
13

The system is OK. At least, via i3. I can start console, I can even manage Restart, Shutdown and things from i3 status bar as before.

~/.config/i3/config:

...
set $Locker i3lock -c 031207 && sleep 1
set $mode_system System (l) lock, (e) logout, (s) suspend, (h) hibernate, (r) reboot, (Shift+s) shutdown
mode "$mode_system" {
    bindsym l exec --no-startup-id $Locker, mode "default"
    bindsym e exec --no-startup-id i3-msg exit, mode "default"
#    bindsym s exec --no-startup-id $Locker && systemctl suspend, mode "default"
    bindsym s exec --no-startup-id systemctl suspend, mode "default"
    bindsym h exec --no-startup-id $Locker && systemctl hibernate, mode "default"
    bindsym r exec --no-startup-id systemctl reboot, mode "default"
    bindsym Shift+s exec --no-startup-id systemctl poweroff -i, mode "default"

    # back to normal: Enter or Escape
    bindsym Return mode "default"
    bindsym Escape mode "default"
}
bindsym $mod+Shift+x mode "$mode_system"
...