After selecting a region with the mouse for Demos->JFreeChart->Misc->TranslateDemo1 and Demos->JFreeChart->Misc->WindChartDemo1, and then resetting by dragging the mouse backwards, the following things happen:
1) TranslateDemo1: Instead of the graph tranlating, the x-axis values changes.
2) WindChartDemo1: The y axis (Direction/Force) gets clipped to show positive side only
Combined screenshots