UserAgent: Mozilla/5.0 (X11; CrOS x86_64 9901.54.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.74 Safari/537.36
Platform: 9901.54.0 (Official Build) stable-channel auron_yuna

Steps to reproduce the problem:
Copy a file into a folder with an older version of the same file

What is the expected behavior?
File manager offer to duplicate or replace the file

What went wrong?
It simply duplicates the file

Did this work before? No 

Chrome version: 62.0.3202.74  Channel: n/a
OS Version: 9901.54.0
Flash Version: 27.0.0.183