Chrome Version       : 71.0.3578.98
OS Version: OS X 10.11.6
URLs (if applicable) : https://www.cwtv.com/shows/crazy-ex-girlfriend/im-making-up-for-lost-time/?play=760e655d-557a-4636-bf72-6a8e2d81ba31, https://www.history.com/shows/vikings/season-5/episode-13, https://www.nbc.com/the-good-place/video/janets/3837721

Other browsers tested:
  Add OK or FAIL after other browsers where you have tested this issue:
     Safari: OK
    Firefox: OK
    IE/Edge:

What steps will reproduce the problem?
1. Pull up a video on History.com, CWTV.com or NBC.com
2. Click the fullscreen button in the lower right corner of the video player
3.

What is the expected result?
The video fills the entire screen.

What happens instead of that?
Nothing happens at all.

Please provide any additional information below. Attach a screenshot if
possible.

Other buttons on the video players -- pause button, volume button, closed captioning button -- do work. The fullscreen button is the only one that doesn't work. This isn't happening with every video player on every website; the fullscreen button does work on Netflix, Hulu, Xfinity, abc.go.com and YouTube.

I have been going over this problem with the Google Chrome Twitter account and have tried several different fixes but nothing has worked: https://twitter.com/googlechrome/status/1075147682325385216

UserAgentString: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36