I am trying to use shadow from a svg to work with highcharts. It is working if the graph is not a straight line but in case of straight line only markers are visible (not the line connecting the markers)
I have updated the fiddle on highchart's website for glow
Fiddle to show the problem (when graph is in straight line) : http://jsfiddle.net/hx5Lgwyv/
working Fiddle (when graph is not a straight line): http://jsfiddle.net/zhpbuwuf/1/
The only change I did in above fiddles is changed a point [60.9, false]