Do you consider that the volume key should do the same thing than when the applet slider is not open then (in which case the bug is a duplicate from the "can't take screenshot with the keyboard key for that when a menu is open" which is due to GTK) or do you think that the multimedia key should act like + and - (that's probably not worth doing because the multimedia key events are not standard, assigned from a capplet and that would make the code complicated for a very special case, you usually either use the multimedia keys without opening the applet slider or use your mouse to interact with the applet)
-- Keyboard Volume Buttons Don't Work While Volume Control Open https://launchpad.net/bugs/51911 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs