"HelveticaNeue" font gets disappeared in Published

You may find unexpectedly disappears of text when you working with "HelveticaNeue" font in courses.

I am working on a course where requirement of client is "HelveticaNeue" font in entire course. Its working fine in preview mode, whereas  when we publish the course and viewed on random systems. i found some slides having "HelveticaNeue" font are  getting disappeared. It we talk about the ratio, I had tested same course on about 20-systems and i got this issue on 4-system i.e. ratio(4:20) which is 20% of total. Any ideas?

I have tested on Platform: Win-7, Win-8. Browser: Chrome, Firefox, Opera.(Updated)

Link for screenshots: 1. http://prntscr.com/mx54o9

                                      2. http://prntscr.com/mx55rs

 

 

 

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