Hello,
I have a highchart with two x-axes and two y-axes in order to display "two charts" in one highchart.
This works great so far, but the crosshair is only ever displayed in one chart. I have tried all the variants for creating a crosshair, but without success.
In the following example, the crosshair is only displayed in the lower chart.
http://jsfiddle.net/hrqfv9ct/8/
I would be very grateful for help on how to display the crosshair on both charts.
BR Sebastian