Ctrl-Alt-Left/Right are not recognized for previous/next track (or anything else?)
Running GNOME 3.32 on Fedora 30, all updates installed. Running under Xorg, not Wayland.
In Devices > Keyboard, I created a shortcut for "Next Track" under "Multimedia". The shortcut was "Ctrl-Alt-Right Arrow"; I created a similar one for "Previous Track" using the left arrow.
This keystroke sequence is apparently not captured. Watching with
dbus-monitor shows that nothing is sent when these shortcuts are pressed. Remapping the shortcuts to something else results in the expected MPRIS message to switch tracks.
Creating the shortcuts worked fine; I got no error about those shortcuts being bound elsewhere or otherwise in use. The keystrokes themselves are recognized, as verified via