Shutdown/reboot ends up in wrong tty (different from that where messages about shutdown are showing up) Major because it's impossible to see what failed in shutdown process due to some potential bug in distribution. And it works perfectly fine with e17 (after shutdown with consolekit it's ending up in the right tty). Distribution: Archlinux
This bug occurs for me on ArchLinux too but I'm unsure how one goes about finding which TTY should be displayed when X11 shuts down. Leaving it open as is for now.
Very unlikely to be xfce related.