This is still working for me in GNOME 3 on Trusty. See https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/1037616 comment #4 for a succinct summary of the rather involved way to activate the session saving/restoring workaround.
This is still working for me in GNOME 3 on Trusty. See https:/ /bugs.launchpad .net/ubuntu/ +source/ gnome-session/ +bug/1037616 comment #4 for a succinct summary of the rather involved way to activate the session saving/restoring workaround.