/etc/gnome dir is created outside of image dir. Too tired to continue to look for the cause. Will do so asap.
Works fine here. Was it a fresh installation ?
gnome-font-install, a util that comes with gnome-print, has '/etc/gnome' hardcoded. Fixing it will break general use (will have '${D}/etc/gnome') hardcoded. I will see if there is an easy solution.
I noticed that too, first time I tried it violated sandbox, but after merging without the sandbox once it didn't violate the sandbox when running with it again. I guess there is some file being written first time and then it just checks that it's there.
If /etc/gnome is not around it will try to create it and generate the sandbox violation.
Removed the running of gnome-font-install from the 'make install' process, and added it to pkg_postinst().