Hello All,
in my yearly clean up of my home server I noticed that I did have dbus
installed (which in the mean time I could delete completly and circumvented 
the problem) and that dbus did have this dependency to libsystemd-login0 - 
I tried to get this fixed via a bug report: 
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=773924 
but the result had been foreseeable.
Kind Regards.
-- 
Oli