So when you first go into your room, someone seems to come in and take the knife from the dresser... only the cutscene that's supposed to show doesn't play. When it happened, I thought I'd missed something so I quit and looked at a youtube walkthrough to see what I'd missed. Turns there was a whole (short) cutscene that didn't play.

Did it play for anyone else? I'm trying to work out if the bug is specific to my computer or something wrong with the GOG version.

Thanks, much appreciated. It'd be useful to know if the GOG version is bugged, even if I doubt I'll come back to the game just to play those puzzles if they do fix it.

Happens on the Steam version as well, according to the discussion forum.

Just a quick update - yes, the puzzles are bypassed for me too. A shame the bug(s) slipped through and it would be nice if Artifex Mundi fixed them for any future players of the game. Luckily, they're not game breaking!

I reported the bugs to them. I guess we'll see if they get fixed and then if that update makes it here. I'm not bothered about playing it again but I'll be nice if future players get to play those puzzles.