Helly Jonnylefiend, thanks for finding a bug!
What was happening is that during keyboard play, certain keypresses were being interpreted as cheat keys and then marking your game as cheating.
This was definitely my oversight and has been corrected.
Cheats must now be activated from within the cheat menu during gameplay, and all keypresses are ignored for the sake of cheating.
The Windows version has been updated here on itch and shortly I will be updating the MacOSX version.
Thanks again for a good bug report and sorry for any inconvenience. Please let me know if you have any other issues and I'll keep adding more of my old games over time here.