As the title says when I am using the video player on Coursera website I am not able to hide the control bar while on fullscreen mode (even if I don t move my mouse for more than 15 seconds). I ve attached a screenshot with the control bar being displayed. (also the captions are overlapping with that control bar) I ve also tried different ways of opening the fullscreen mode (click on the "Full Screen" button or by pressing 'F'). I don t have this problem on websites like YouTube.