Why I cannot zoom heatmap?

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Users can use Zoom to explore the heatmap view in more details.

20131105 ZoomHeatmap 1.png

However, if color bar has been applied to either of the 2 axes, zooming is disabled for that axis. In the example below, the color bar has been added to x-axis, so zooming can only be applied to y-axis. If color bars are added to both axes, the heatmap cannot be zoomed.

20131105 ZoomHeatmap 2.png