Hello everyone,
Sadly I have another bug to report . This one is also very odd. You can try it on level 19 "Volcano" of the default levelpack:
1. Move the main character to the checkpoint. Save when the moving spike is at it's highest position!
2. Now step on the pressure pad and immediately press F3 to reset. When timed correctly, the moving spike will no longer move. Touching the pressure pad will "fix" the moving spike.
3. You can now finish this level without your shadow.
The level replay will result in the death of your main character.
Good luck with debugging !