Space added at playback
A space is added to the end of the text when using the Suffix key activation.
The Suffix Key option primarily activates the shortkey macro by pressing the Space Bar or Enter key. By default ShortKeys will play back the text and then either press the Space Bar once (adding a space after the text) or press the Enter key (most likely moving the text cursor to the next line).
To turn off this behavior, open ShortKeys and click on Options, Preferences, Playback and select the General tab. Turn off the “Retype Suffix Key” option and save the change.