Force Facebook to play videos in background tab

Question

Recently Facebook added a feature that if I play a video and switch to another tab or a different program from chrome, the video stops playing.

Is there a way to force it to keep playing?

I use Chrome and I don't have flash.

This is not enough to disable that feature:

document.addEventListener('visibilitychange', function(e){
  e.stopPropagation();
  e.preventDefault();
  return false;
})

Answer 1

I just enabled uBlock origin on Facebook again and now I can play videos in the background.

Seriously Facebook, what the hell?

Answer 2

Here's another simple workaround to execute in the dev console:

document.onblur = null
document.onvisibilitychange = null

Answer 3

I developed chrome extension for this :) https://chrome.google.com/webstore/detail/facebook-allow-background/fkbfhbmobnjpcbpjegogifoeidhmnlel?hl=en