Brasero cannot eject DVD+RW after disc burn

[Kafui Odzangba Dake]

On Ubuntu 16.04, burning an ISO with brasero

What I expect to happen:
The disc ejects automatically after the burn process completes.

What happens instead:
Brasero prompts me to eject the disc manually with the error:

"Please eject the disc from "PLDS DVD+-RW DU-8A5HH" manually.
The disc could not be ejected though it needs to be removed for the current operation to continue."

Manually removing the disc does not make the prompt go away. I waited for about 5 minutes and clicked on "Cancel" and got another error:

Error while burning.
SCSI error on write(1868432,16): [3 0C 00] Medium error. Write error.

The DVD was written however and could be read on other computers. I have attached screenshots of both error dialogs and the brasero log.

More info:

$ apt-cache policy brasero
brasero:
  Installed: 3.12.1-1ubuntu3~16.04
  Candidate: 3.12.1-1ubuntu3~16.04
  Version table:
 *** 3.12.1-1ubuntu3~16.04 500
        500 http://gh.archive.ubuntu.com/ubuntu xenial-updates/universe amd64 Packages
        100 /var/lib/dpkg/status
     3.12.1-1ubuntu2 500
        500 http://gh.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
(~) vo-mimbre $ lsb_release -rd
Description: Ubuntu 16.04 LTS
Release: 16.04

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.