UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.109 Safari/537.36

Steps to reproduce the problem:
1. I have 3 DOM, which the first and the third are "user-select: none;"
2.  I type "Ctrl + a" and "Ctrl + c", only the first one and the third one shows bean selected.
3.  I type "Ctrl + v", the second one was also bean pasted. So it seems that the second one was selected too.

What is the expected behavior?
the second one not bean selected.

What went wrong?
the dom which "user-select: none;" is selected.

Did this work before? N/A 

Does this work in other browsers? N/A

Chrome version: 59.0.3071.109  Channel: stable
OS Version: OS X 10.11.5
Flash Version: Shockwave Flash 26.0 r0

can be tested on https://jsfiddle.net/smjcm/ts0vrk75/1/ on Chrome