Steps to Reproduce

1. run the attached project without applying the fixes in /WEB-INF/highcharts_fixes
2. click the top right button to export to a PDF

Current Result

there are more spaces between words in the title, x-axis label, and y-axis label.

Expected Result

no such extra spaces in labels

Debug Information

• it's highcharts 5.0.14 bug https://www.highcharts.com/forum/viewtopic.php?t=39580
  live example: http://jsfiddle.net/daniel_s/hc4r743n/
• only happened in PDF, not in PNG or JPG

Workaround

• since 5.0.14 is the last version of 5.x, highcharts just provides patches.
• applying the javascript patches under /WEB-INF/highcharts_fixes which are downloaded from https://github.highcharts.com/hc5-fixes
• it uses lib of 5.0.12