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Crosshairs on Heatmaps prevent sensible cell activation #5259
Active cell in a heatmap changes when the mouse moves over another cell even if a crosshair if shown over it.
Using crosshairs with a high enough zIndex to be shown above cells in a heatmap prevents changing the active cell via mouse hover IF the mouse is over the crosshair.
Live demo of the issue
Steps to reproduce the behaviour
Chrome 49, Firefox 38, IE11