Comment 1 for bug 1398799

For Vivid this should be fixed in /etc/profile.d/vte-2.91.sh as shipped by libvte-2.91-common. Could you please confirm it?

Even though Ubuntu will have to ship vte-2.90 and 2.91 in parallel for a while, I think they could just drop the libvte-2.90-common package and let everyone refer to vte-2.91.sh (and call that vte.sh for simplicity). I can't foresee how any future change in that script could break anything for older vte. As far as I recall, Fedora does this too.