UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2759.0 Safari/537.36

Example URL:
https://tweetdeck.twitter.com/

Steps to reproduce the problem:
1.  Open tweetdeck.twitter.com
2. Open another tab while the Tweetdeck tab is loading
3. Go back to the Tweetdeck tab

What is the expected behavior?
I should be able to view the app's content.

What went wrong?
I view a black screen instead of the app's content.

Does it occur on multiple sites: Yes

Is it a problem with a plugin? No 

Did this work before? Yes Friday, 3rd June 2016

Does this work in other browsers? Yes 

Chrome version: 53.0.2759.0  Channel: canary
OS Version: OS X 10.11.5
Flash Version: Shockwave Flash 22.0 r0