In Channelwood in Myst a particular lever doesn't appear to be working. The explanation for my problem contains a spoiler, so I've hidden the text below:
There is a lever on the second level in one of the huts. I pressed it and saw something happen across the way next to the spiral staircase. But navigating back to the spiral staircase (still on the 2nd level), nothing appears to change. But consulting hints and walkthroughs, everything says the pressing that lever is supposed to open the door in front of the spiral staircase. I tried going back and pressing it again just in case I accidentally double-pressed the first time or something, but the door never opens.
Am I missing a key step here? Or could this be or is this a known bug?
I'm playing Myst on the iPhone in case that makes any difference. I don't believe it should, since the content of the game should not be any different.