I'd like to be able to disable [Super][Space] as the key combination that cycles through "desklets" so I can use it as the shortcut for switching input methods (languages) with IBus (this is IBus' default shortcut).
I opened "Keyboard", clicked the "Shortcuts" panel, and in General, selected "Show Desklets". I double clicked [Super][Space], pressed [Backspace] to delete, but [Super][Space] still cycled through the desklets, even after reboot.
This illustrates that the removal of the shortcut was registered, but Cinnamon seems to ignore it:
% dconf dump /org/cinnamon/desktop/keybindings/ [/] show-desklets=@as 
What's going on, and how can this be resolved?