I had the same problem. I think Telltale's looking into it.
You can get past the bug if you keep trying (you will probably have to restart the scene once this glitch happens - at least I did, so save your game right before you go over to talk to the monsters). Be careful to only click the walk cursor close to Fone (the problem seems to be triggered by clicking far away from him). If you're still having trouble, you can click the ? icon to learn exactly what you have to do to solve the puzzle... the glitch made it hard for me to understand what I had to do.