[enable ruffle]
Bones spawned by looking in the coffin don't despawn. This leads to the bone remaining permanently on screen, and can even lead to multiple bones on screen, as shown below:
Additionally (though this is likely a game bug and not a ruffle bug), the flashlight overlay followed the mouse whilst I was clicking-and-dragging the bones offscreen, leading to this effect
[enable ruffle]
[enable ruffle]