Also, I just tested Backspace with every possible configuration of window focus, mouse position, game mode, etc, higher resolution (1600 x 900) -- it never, ever does anything. Are the developers sure this feature is enabled? Has any user ever used Backspace successfully?
A keyboard way to "back up" is maybe my #1 issue with this game. Or at least an ESC to "close current window and return to previous screen." Something! All the clicking hurts.