"Play" icon button appeared before beginning the course in Chrome

Many of us from eLearning industry had been facing this problem in the past that while working with Chrome:  "Play" icon button appears at the beginning of the course.

While working on any courses, if we view the course in Chrome browser a big "Play" icon button appears at the very beginning of the course. Which is not at all restricting the course, but it is annoying to the learner. Does anyone have any idea?  how to get rid from of this?

Link for screen shots: 1. http://prntscr.com/mzwyyy

 

Thanks in advance....!

 

 

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