When you get to the end of a sprint you are unable to see the hours in the hover tooltip as it falls off the side. It gives you a scroll bar but it’s not much good when you need to be hovering over the node. Take a look at the attachment to see what I'm talking about.
We're using Urban Turtle 2012 version 184.108.40.206
I’ve tested this using Chrome 25, Firefox 19, IE10. IE allows you to scroll with the keyboard.