Solution: Restart the Browser
- If you open an incognito browser window and try to play the video and it works, it's a good indication that this may be the problem. Just restart the browser.
- Navigate to a post that has a video.
- Open a second tab and navigate to that post.
- Go back to the first tab and press play on the video: the video starts playing.
- Switch back to the 2nd tab and press play: the video does not play.