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Found a small bug in Chapter 8 (Boiler). Without the Golem accompanying me in the fourth screen (the one where your character has to activate two beams of light, and from where your character can cross to the next chapter), I was able to pass through the Golem-activated door just by clicking on part of the level where I'd be able to go if that door were open. Note in my screenshot how the character is standing on the pressure plate even though the door in question isn't open yet.

Was able to reproduce this glitch three times using the same save file.