Julien, you are right in that the icon disappears if the program is simply closed with 'Quit'.
However, I have added added rhythmbox to Ubuntu's dock so the icon is always visible. Right-clicking the icon displays "Stop & Quit". However, while the program is running, rather than just 'Quit' you can now 'Stop and Quit' from either the program icon or the icon that appears in the top bar while the program has focus. The new option in my view fixes the bug that was originally raised in that you can now quit and stop rhythmbox while music is playing, something that couldn't be done in previous releases. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to rhythmbox in Ubuntu. https://bugs.launchpad.net/bugs/1754125 Title: Rhythmbox stays running in the background after quit Status in rhythmbox package in Ubuntu: Triaged Bug description: If you do ps -alx you will see rhythmbox process still running. It causes opening rhythmbox to hang when trying to open again ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: rhythmbox 3.4.2-1ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3 Uname: Linux 4.15.0-10-generic x86_64 ApportVersion: 2.20.8-0ubuntu10 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Wed Mar 7 13:21:51 2018 InstallationDate: Installed on 2018-03-07 (0 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180307) ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: rhythmbox UpgradeStatus: No upgrade log present (probably fresh install) XorgLog: Error: [Errno 2] No such file or directory: '/var/log/Xorg.0.log' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rhythmbox/+bug/1754125/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp