UserAgent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36

Steps to reproduce the problem:
1. Visit Gmail Inbox
2. Click an Unread Email
3. Allow page to load
4. Once loaded, click backspace

What is the expected behavior?
When I click backspace in step 4, I am taken back to my Gmail Inbox.

What went wrong?
When I clicked backspace in step 4, I was not taken back to my inbox. I was using my computer keyboard with my left hand only, while my right hand was relaxing, not using the mouse. Normally, I would be able to use my left hand to get back to the inbox. Instead, I had to raise my right hand to move the mouse over to the "Inbox" link, and click it. 

While this doesn't seem like a lot of work, I ran a music festivals sound for two stages this past weekend, and my arms are much more fatigued than they usually are. But I know for some people, it is like this for them every single day. To me this is an accessibility issue. I know backspace = back button sucks, but this is slowing me down considerably.

Did this work before? Yes Last week

Chrome version: 52.0.2743.116  Channel: stable
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: Shockwave Flash 22.0 r0

Thank you!