Yes, you gotta love systemd. There is an upside though, it's about
two seconds between the time my BIOS fires off the boot block and I've got a desktop login screen, under the old start up system it was more like 30 seconds.
... unless you suddenly find yourself in the never-ending cylon eye situation (ask Stefan).
Anyway, new x2goserver builds (minus FC26, since there's a problem with upstream's metadata it seems) now feature a /etc/tmpfiles.d/x2goserver.conf file on systems using systemd.
Hope that will protect session data from now on.
Mihai