UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/53.0.2785.143 Chrome/53.0.2785.143 Safari/537.36

Example URL:
https://twitter.com/

Steps to reproduce the problem:
1. Open Twitter
2. Find tweet that includes Vine clip
3. Vine not playing

What is the expected behavior?
Vine clip should play automatically when clicked on

What went wrong?
Nothing happening

Did this work before? Yes 

Is it a problem with Flash or HTML5? N/A

Does this work in other browsers? Yes

Chrome version: 53.0.2785.143  Channel: stable
OS Version: 14.04
Flash Version: Shockwave Flash 11.2 r999