This is a confusing bug. It appears that the app has quit, but music still plays & it is not obvious how to do anything about it. I have learned now that you can right click the icon IF you have it in the dock, but why does the icon not show the app running? - without a dot under the icon it looks like the app has correctly quit, but it has not. This is a different behaviour from every other app.
Suggestions: Quit the app completely when you click X. or show the dot on the dock icon if the app is still running. -- 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