Hello! Thank you for playing Insight; we are very happy that you enjoyed it! After your comment, we checked it out and found that yes, it is a bug—and a weird one, lol. ^^ We are going to update the game to fix this bug. Anyway, the puzzle is optional, so you don’t have to solve it to finish the game. You have already seen the first and the third endings, but you haven’t seen the second one yet, which happens earlier in the story. I recommend you to checking the ‘storyline’ tab; you might find a hint for the second ending(at least where it happens). Thank you again for the bug report! ^^
Thanks for the response! I found 3 endings, just trying to figure out the puzzle box and the lock box now. Was worried that the puzzle box wasn’t working correctly due to the ending not triggering properly in that section..
I’m determined to figure it out though haha. Keep up the great work! Excited for whatever you have coming next!