In Hera, sometimes I press the super key to activate a shortcut and then I change my mind. However an annoying keyboard shortcuts preview pane appears. Pressing the super key again gets rid of it. But is there a way to make it not appear in the first place?
Go to Settings > Keyboard and change the default behavior for the ⌘-key to disabled.
⌘-key is the super-key or the 'windows'-key. See wikipedia for the origin of the symbol.