Deleted the game part of the way into chapter 5. I couldn't get one of the 3 environmental puzzle things to activate no matter how many times I looked at it. Even followed a video guide and couldn't get it to do anything no matter how many times I looked at it and moved to. I left the game in quick resume for a couple of days, so not sure if that messed something up. I didn't consider that potentially being the issue until deleting the game. Oh well.
Did you try restarting the console and then testing that checkpoint again ? Might just be a bug