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. OPEN A WEBPAGE
2. GO TO ANOTHER
3. HIT BACKSPACE AND GET A STUPID THING TELLING YOU TO PRESS ALT AND <-

What is the expected behavior?
go back to the prior page

What went wrong?
did not go back

Did this work before? N/A 

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

this is just so stupid of a change, really no tick box for the non idiots to re enable?