The problem is coming from the Canvas elements: PennController doesn’t understand that you specified the dimension of an anonymous element, instead it takes the first number to be the element’s id (in your case, 700 for the first Canvas, 500 for the second one). As a result the second number is interpreted as the Canvas’ width instead of its height, and so its height is null, making the feedback and button appear behind the Canvas (= under a 0px tall element). Give a name to each of you Canvas and the problem should go away (I would also suggest resizing your Canvas, they are very big right now)
Jeremy