I've just uploaded a build just for you! It's the "Peyton Ending Shortcut" build (it's a PC build but let me know if you need Mac or Linux!). What you'll want to do is click the "Peyton Ending" button on the main menu and click on the bed in Phebe's room! This will cut straight to Peyton's ending (starting with the underground tunnels). The game should also drop a Flower into your key inventory for you to use in the final scene!
Thank you for letting me know that this glitch was still in the game! I got a nice look at what was going on under the hood and I feel like I've got a lot better idea of what areas to focus on in my own programming journey. Thank you again! :D