So I recently encountered a problem where I couldn't open up a cage even though I had enough keys for it. So I googled the problem and saw this was fixed on the Steam version. I checked the Gog version and it seems like it hasn't seen a revision at all. Will these fixes ever come to Gog?

Is the game working on Windows 10 actually already?

I'm playing it on windows 10 right now. There's just this weird random black lines that appear when your in the world map but hasn't caused any problems for me so far apart from what I listed above.