UserAgent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.116 Safari/537.36

Steps to reproduce the problem:
1. Open http://output.jsbin.com/furexucefi.

What is the expected behavior?
Refer to the attached file "Expected result.png"

What went wrong?
Changed behavior for the flexbox rendering.
Refer to the attached file "Wrong behavior.png". 

Did this work before? Yes in Chrome 53

Chrome version: 54.0.2840.27 beta-m  Channel: beta
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: Shockwave Flash 23.0 r0

Wrong behavior in Chrome 54 Beta and Dev version. It works fine in Chrome 53 and IE11.
 

Deleted: Expected result.png 14.6 KB

	Expected result.png 14.6 KB View Download

Deleted: Wrong behavior.png 4.9 KB

	Wrong behavior.png 4.9 KB View Download