bug#36479: Xfce4 autologin prevents logout and login with another user

bug#36479: Xfce4 autologin prevents logout and login with another user

[znavko]

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I have configured Slim to do autologin with user 'mom'. I use
xfce4+slim. So it works.
But I have expected it is possible to logout from 'mom' and login with user 'bob'.
But not! After pressing in Xfce4 'Logout' it does logout but thereafter login
again with 'mom'.
It is a bug, cause this worked before.

# guix describe
Generation 92 Jun 28 2019 07:48:08 (current)
 guix fbb5b68
 repository URL: https://git.savannah.gnu.org/git/guix.git
 branch: master
 commit: fbb5b688b6258d40e91a34b52a402eea246210d3

config is attached.

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[-- Attachment #2: znavko-config-slim.scm --]
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		  (services (cons* 
			     (service xfce-desktop-service-type)
			     (service dhcp-client-service-type)
			     (service slim-service-type
				      (slim-configuration
					(auto-login? #t)
					(default-user "mom")
					(xorg-configuration
					 (xorg-configuration
					  (extra-config  
					   '("Section \"InputClass\"
Identifier \"touchpad\"
Driver \"libinput\"
MatchIsTouchpad \"on\"
Option \"Tapping\" \"on\"
EndSection")
					   ))))
				      )

			     (modify-services      
			      (remove (lambda (service)
					(member (service-kind service)
						(list ntp-service-type avahi-service-type 
						      bluetooth-service network-manager-service-type
						      gdm-service-type)))
				      %desktop-services) ;end of remove lambda services

			      (wpa-supplicant-service-type config =>
							   (wpa-supplicant-configuration
							    (interface "wlp2s0")
							    (config-file "/etc/wpa_supplicant/wpa_supplicant.conf")))

			      (elogind-service-type
			       c => (elogind-configuration (handle-lid-switch 'ignore)))
			      )	;;end of modify-services
			     ))	;;end of services