Correct! It was a bug, should be fixed now on the latest update
Sorry for the bug and thank you for reporting it!
Hi Jaime, sorry for not getting back to you sooner! Luckily the bug didn't effect other puzzles in all of my other playthroughs, it was just that one. Glad to hear that it's fixed now, I'll have to play it again for the full experience.
Thanks for getting back to me!