I can't reveal tunnel when discarding it (to gain a gold). The instructions say to "click below the log" but the card has already been discarded and no matter what I click on nothing happens until I hit the "done reacting" button and I don't get to gain my gold.
did you click in the log? it isn't a regular button so it might be hard to find, but the log to the right that tells you everything that is happening, should produce a hyperlink like button for you to click at the bottom, you might need to scroll to see this.