lightdm after choosing sequence shutdown, cancel, restart just runs shutdown

[piomiq]

Sometimes accidentally I click shutdown button when I really want only to restart. In this case I just cancel shutdown and go to restart. After clicking this button system unfortunately shutting down.

My hardware is following:
Skylake Intel i7-6700, and graphics HD 530 (GT2)
And software:
Up-to-date system on today evening (2016/11/16).
lightdm 1.18.3-1
Plasma 5.8.3, xf86-video-intel 1:2.99.917+730+gdad64e9-1and, kernel 4.8.8-ARCH

As far as I know lightdm in version 1.20 has been sometime ago released, so I wonder why the newest version is not available in Arch/Antergos.
Maintainer of this package is: Maxime Gauduin [email protected]. I'm not sure if I can write to him with ask to rebuild and release package lightdm. Actually I did it by my self (using AUR), but I got some conflicts in moment of installation.