I still couldn't make it past that point, I just watched another person playing this game and he had the same issue! Had to replay the game from the start just to trigger that item drop, you can check it out at 2:10:14 on his twitch stream https://www.twitch.tv/videos/2815428495
Thank you! Unfortunately, I don't think I'll be able to watch today's stream. I'd really appreciate it if you could check the patch notes in my latest devlog. I included a reference image that should help with the problem.
If that still doesn't solve the issue, I might just remove or rework the event altogether.