switch users in plasma5

[Serge Volkov]

Hello, Friends!

I use latest x11/sddm and plasma5 in FreeBSD 11.2 RELEASE P4. And I 
discovered strange behavior. If I choose in the KDE menu -> Leave -> 
Switch User (see screenshot http://www.ulbsd.ru/devel/switch_user1.png) 
and try to click on the big plus button (see screenshot 
http://www.ulbsd.ru/devel/switch_user2.png), then nothing happens. Does 
anyone know how to fix this behavior and make the user switching work?

-- 
Thanks,
Serge