No right menu button or top menu dropdowns in GNOME 3.30.1
How to return the menus to Rhythmbox in Ubuntu 18.10
on my GNOME machine Rhythmbox looked similar to this (taken on MATE)
Note the gear icon at right as well as the top menus, and the speed-control plugin
All are absent after upgrading to Ubuntu 18.10 / GNOME 3.30.1 / Rhythmbox 3.42
There is no way to access the Plugins, View etc menus nor the Preferences, and the speed-control plugin is not shown (perhaps it broke in an update though).
This is on X11, which seems to matter as well.
This might be GNOME Shell's fault but I'm reporting this here as other apps (Totem for example) haven't lost all their menus this way.