Undo zoom in ContinuousChart

Hey,
I use a graph whose x-axis runs all the time and the adjuster is ContinuousChart. When I zoom it works fine, and continues to run the x-axis relativistically. But when I try to undo the zoom it does not work. [You can easily see this in your examples - in the example of Charting].
Is there a way to zoom out/undo zoom in ContinuousChart?