We're having problems with the Togglable facility in Legend. When we toggle any data series in a Legend the chart is re-rendered but all elements, chart and axes, are positioned relative to the top left hand corner of the canvas.

Before toggling a typical chart looks like this:
Click image for larger version. 

Name:	Legend 1..jpg 
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and after toggling it looks like this:
Click image for larger version. 

Name:	Legend 2..jpg 
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Size:	94.8 KB 
ID:	24986

Presumably this is a known problem but what is the solution?

Thanks in anticipation of a solution to a frustrating problem.