UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.82 Safari/537.36

Steps to reproduce the problem:
1. Go to any page, click a link. 
2. Press Backspace key.
3. Does not navigate to previous page.

What is the expected behavior?

What went wrong?
Backspace key does not navigate to previous page, as it did for the past 8 years.

Did this work before? N/A 

Chrome version: 52.0.2743.82  Channel: stable
OS Version: OS X 10.11.6
Flash Version: Shockwave Flash 22.0 r0