JCrop in Facebook canvas causes image to shake as you drag the selection

[tamoyal]

I posted the question/issue on StackOverflow here:
http://stackoverflow.com/questions/13075739/jcrop-shaking-image-in-facebook-canvas-when-dragging-selection

The problem I'm having is that code that works great in a JSFiddle or outside of the Facebook canvas is causing a weird issue in the Facebook canvas. The image shakes a very tiny bit as you drag the select box which causes a bad visual user experience. I'm going to try to dig a little deeper beyond stripping the code down to it's most simple use case but any insight would be greatly appreciated