It's most likely a hardware bug: the 'Eject' button on most CD-ROM players doesn't send the proper signal.
On drives where it does, the disc gets unmounted and ejected properly, afaik. -- The eject button on the CD-Drive does not work for data CDs https://launchpad.net/malone/bugs/36539 -- desktop-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
