Somewhen early in ACT 1, suddenly the notes and clues in the pad don´t show up anymore. The clues are critical to enable to play the game properly. Was not able to fix it. Tried older Proton versions and some minor tinkering, but gave up after short while. You can still finish the game though by having a walkthrough open on the side, which can act as your clues. Also ability to unlock achievements are not affected by this bug. I was able to get all.