A potential sequence-breaking bug has been fixed with thanks to input from the user Saraphel.
The bug related to how many items the player would have in the inventory and how many the puzzle would need for your to have to proceed. At a later part of the game you'd have given/spent many of the items and you'd be one item short of being able to solve the puzzle. This has been fixed now.
Thank you to all the users who help with reporting bugs and other issues. :3