Fixed:

Main quest 7 "Dye it black" wasn't getting activated. You can now play it (right after Main quest 6 "Another night begins"), and it'll also unlock "Feed on British drunkards", "Feed on opium users" and "Work in the gambling hall", and that's the content left in the demo so far  )

You'll no longer be stuck on the loading screen when loading a save (both mac and windows). I suspect there'll still be some issues with saving/loading as this is my first time making my own save system and it's pretty hard stuff, so don't hesitate to let me know if anything doesn't work or seems strange!