Hmm weird. I'm on PC. The "Back" button (in the center-bottom part) is greyed out and I can't mouse scroll at all for the entirety of Chapter 2+. Weirdly enough, i can do it on Chapter 1
It specifically started as soon as Ch. 2 started all the way to the ending on my playthrough but, i think it's sorta fixed now. I reinstalled the game and kept a backup of my save. The back button works now!