While trying to reproduce bug 67217, I loaded a few apps including
gnome-dictionary and ran gnome-session-save.
After logging out and back in again, gnome-dictionary does come up, but it
misinterprets its command line and immediately tries to look up
ps tells me that the command line was:
gnome-dictionary --sm-config-prefix /gnome-dictionary-ckvlKD/ --sm-client-id
Upstream as http://bugzilla.gnome.org/show_bug.cgi?id=91207
Upstream (and quite possibly fixed)