Mouse, Keyboard, Compatible Controller (Wired xbox controller works best).
During the start of Chapter 4, a tutorial message on holding Tap key and Ctrl key would stop the player from throwing all projectiles.
Exit to Main Menu, go to settings and disable the Tutorials.
Load the Chapter, not Continue from checkpoint and select chapter 4 (or any chapter you are stuck on).
During the loading screen, use the controller to reach the place where you encounter the issue and use it to clear the puzzle.
You can now go back to using Mouse and Keyboard.