Similar requests.
Like Cakewalk SONAR, SPACE returns the cursor to the start position when playback is stopped,
Shift+SPACE will return the cursor to the start position when playback is stopped.
What follows is a suggested implementation.
(1) When playback is stopped by Shift+SPACE, the operation is opposite to the setting of "Return to start when stopped".
(2) Add a setting for enabling/disabling the above behavior to the options.