I installed Neon on my only hardware with an optical drive to test Bug 427174 with the Disks & Device applet, which is about the optical drive tray auto-closing when ejecting a disc from the applet. I discovered that the issue in question was not an issue with the applet but rather deeper in the distro configuration: running `sysctl -w dev.cdrom.autoclose=0` fixed the issue of the tray auto-closing, so I am wondering if it would make sense to ship this way by default in Neon. See also https://wiki.archlinux.org/index.php/Optical_disc_drive#Disc_tray_autocloses