Hello Robert, I believe this is intentional. If you wish to restore the previous behavior, it should be sufficient to change /usr/bin/write.ul to root:tty 02755.
Thanks ** Changed in: util-linux (Ubuntu) Status: New => Confirmed ** Information type changed from Private Security to Public Security -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2064685 Title: write says write: effective gid does not match group of /dev/pts/5 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/2064685/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs