This bug persist on the Guix version I'm using:
★★★★★★★★★★
$ guix describe
Generation 4 Jul 05 2020 13:40:24 (current)
guix 6ee7468
repository URL: https://git.savannah.gnu.org/git/guix.git
branch: master
commit: 6ee7468758d7c043692ae8c0b5e130fa4eabe94c
★★★★★★★★★★
There is one thing I hadn't noticed before, though. If I insert a DVD while I'm
in a GNOME session, it doesn't work (that's the bug), but if I reboot with the
DVD still in, log in to GNOME and open Nautilus, the DVD is listed and it works
correctly. After doing this, if I extract the DVD and insert it again, it still
doesn't work.
