I've tried to play the html5 version on Arch Linux and it seems the sex scene is bugged. Right at the first scene (after disabling ruin spikes), I saw no images, only text.
After running the game on the pc web version, I also didn't see the scene where you firs meet the wolf lady, nor did the fog of war work correctly. I assume this is a problem with the itch.io app playing the downloaded html version.