I have tested this and can confirm the issue still remains on both Ubuntu 12.04 and 14.04, so marking as confirmed. The technical reasons behind the current behaviour do not cause the issue at hand to become invalid. Upstream may have marked this as invalid, but this remains an Ubuntu issue, and this bug should remain confirmed until a suitable work around is found for Ubuntu.
I have tested this and can confirm the issue still remains on both Ubuntu 12.04 and 14.04, so marking as confirmed. The technical reasons behind the current behaviour do not cause the issue at hand to become invalid. Upstream may have marked this as invalid, but this remains an Ubuntu issue, and this bug should remain confirmed until a suitable work around is found for Ubuntu.