Dreamfall Chapters has been updated to version 5.2, which addresses a number of bugs.

This update:

Fixes a problem with buggy graphics on Mac, resulting in square, coloured artefacts appearing in scenes. This also includes other visual fixes for the Mac
Fixes an issue with missing lights in the Enclave in Book Two, affecting dialogues with Enu and Likho
Makes it easier (we hope!) to solve the musical puzzle in the Journeyman Inn for tone-deaf players
Fixes an issue with the materials on the Dreamer in chapter 7, to make it less shiny. It was too shiny. Way too shiny
Brings back missing sound-effects and voices for the guards banging on the roof gate in the Friar's Keep scene
Updates the cut-scene with Mira at the end of the Kidbot job path — nothing big, it should just look better now
Fixes an issue with buggy anchoring in the settings menu
Fixes missing collision geometry in Marcuria, which made it possible to exit the world — no more YouTube videos of flying Kians!
Boosts footsteps on wooden surfaces, which was noticeable in (e.g.) the Hand That Feeds
Improves email format check for Red Thread account setup, to notify users of things like double @s
Fixes an issue with targeting Crow on top of Klacks' stage in Book Four, which was frustrating
Fixes a problem with the light beams in the Book Four Interlude on Macs, which made it super hard to solve the puzzle. Other light beams should also be improved now on Mac
Fixes an issue where players could enter the vintner's booth and confuse the vintner in Book Five. You don't want to confuse the vintner
Fixes an issue where you could open the game menu while a scene faded in, which caused the game to stop responding when loading a previous save
Some smaller fixes which might rightly be considered spoilers if we included them here, so we didn't