Comment # 3 on bug 934901 from Dr. Werner Fink

(In reply to Marcus R�ckert from comment #2)

> the package, which restarts systemd-logind, is the systemd package.

The only place where a try-restart is done is in %postun

 %postun
 /sbin/ldconfig
 if [ $1 -ge 1 ]; then
         /usr/bin/systemctl daemon-reload >/dev/null 2>&1 || :
         /usr/bin/systemctl try-restart systemd-logind.service >/dev/null 2>&1
|| :
 fi
 %if ! 0%{?bootstrap}
 if [ $1 -eq 0 ]; then
   /usr/sbin/pam-config -d --systemd || :
 fi
 %endif

and had never caused problem in past with systemd-210 nor with systemd-219.
Which display manager do you use?  Below xdm/fvwm2/su I can do an `rpm -Uhv'
with
the systemd-219 packages and see how on the last run dracut gnerates the
initrds.  The X11 session remains and stays usable.

The same for `zypper install --force *.rpm'