highslide-software/highcharts.com — pull request #2828 by bmatcuk (2014-03-19 00:18:11+00:00)
Title: added support for multipane plotbands

Fixes #2827 - The problem is that PlotBands are calculated using PlotLines for the left and right side and then combined to form a rectangle. However, the PlotBand function was not multipane aware, so it would not combine the PlotLines correctly.