This is a regression issue broken in ‘M-62’, below is the Manual Regression range and will soon update other info.
Good build : 62.0.3170.0
Bad build : 62.0.3171.0

Note : Above issue is not seen in other browsers like Firefox & Internet Explorer and site renders properly with all the contents.

Deleted: Expected_Result.mp4 719 KB

	Expected_Result.mp4 719 KB View Download

Using the per-revision bisect providing the bisect results,
Good build:62.0.3170.0(Revision:490562).
Bad build:62.0.3171.0(Revision:490649).

You are probably looking for a change made after 490643 (known good), but no later than 490644 (first known bad).

CHANGE-LOG URL:
---------------
https://chromium.googlesource.com/chromium/src/+log/52209cb5ae750acd66a8eb515667a68be4e737aa..65b35725c48bc658fe53911f3d248a68393ecf0e

From the CL above, assigning the issue to the concern owner

@cbiesinger : Could you please look into the issue, pardon me if it has nothing to do with your changes and if possible please assign it to concern owner.

Review-Url: https://chromium-review.googlesource.com/592691
Note :Able to reproduce the issue in Win 10.0,Ubuntu 14.04 & Mac 10.12.5 and Able to reproduce in latest Canary #62.0.3171.0
Adding Release Block-Dev for this issue.Please remove if not the case.
Assigned to reviewer due to "cbiesinger" is OOO.

cbiesinger is on leave, I'll take a look.

Unable to reproduce on tip of tree, could you please check the latest canary or dev build and see if it works for you? If so please assign back to me. Thanks!

With response to comment #4,
Retested above issue on latest ToT (#490727) and Chrome canary build(#62.0.3172.0) on Windows(7,8,10)& Mac(10.12.3, 10.12.5, 10.11.6) OS and issue is reproducible. Kindly Review an attached screen-cast for the reference.

Thank you.

Deleted: Actual_Behaviour_ToT.mp4 586 KB

	Actual_Behaviour_ToT.mp4 586 KB View Download

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/6f2523764b62eb541112fbd6c394c2ad7c6550b3

commit 6f2523764b62eb541112fbd6c394c2ad7c6550b3
Author: Emil A Eklund <eae@chromium.org>
Date: Mon Jul 31 12:12:15 2017

Revert "[css-flexbox] Move ComputeLineItemsPosition to FlexLine"

This reverts r490644 (commit 65b35725c48bc658fe53911f3d248a68393ecf0e).
Caused certain websites (such as permission.site) to not render at all.

Bug:  750553 ,  750546 
Change-Id: I4233a2e16b8145e5a486e45b6c585ad54b0f4f7d
Tbr: cbiesinger@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/593608
Commit-Queue: Emil A Eklund <eae@chromium.org>
Reviewed-by: Emil A Eklund <eae@chromium.org>
Cr-Commit-Position: refs/heads/master@{#490748}
[modify] https://crrev.com/6f2523764b62eb541112fbd6c394c2ad7c6550b3/third_party/WebKit/Source/core/layout/FlexibleBoxAlgorithm.cpp
[modify] https://crrev.com/6f2523764b62eb541112fbd6c394c2ad7c6550b3/third_party/WebKit/Source/core/layout/FlexibleBoxAlgorithm.h
[modify] https://crrev.com/6f2523764b62eb541112fbd6c394c2ad7c6550b3/third_party/WebKit/Source/core/layout/LayoutFlexibleBox.cpp
[modify] https://crrev.com/6f2523764b62eb541112fbd6c394c2ad7c6550b3/third_party/WebKit/Source/core/layout/LayoutFlexibleBox.h

 Issue 750544  has been merged into this issue.

Update :
Retested this issue on latest chrome canary #62.0.3174.0 on Windows(7,8,10), Mac(10.12.3,10.12.5,10.11.6) & Linux(14.04 LTS) OS and issue is fixed. It is working as intended.

Thank you.

Deleted: Canary_behaviour.mp4 609 KB

	Canary_behaviour.mp4 609 KB View Download

Mostly-minimized testcase for this

Deleted: permission.site.html 458 bytes

permission.site.html 458 bytes View Download

Better minimized testcase

Deleted: permission.site.html 450 bytes

permission.site.html 450 bytes View Download

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/4c6cc67b76861b1927bcad841b4eba11b779d1e8

commit 4c6cc67b76861b1927bcad841b4eba11b779d1e8
Author: Christian Biesinger <cbiesinger@chromium.org>
Date: Thu Nov 09 00:10:37 2017

[css-flexbox] Add a regression test for  bug 750553 

Apparently we had no test for centered alignment under these
circumstances, so adding one.

R=eae@chromium.org

Bug:  750553 
Change-Id: I786a86371703f689783ca9ed4ab95fe8a692663a
Reviewed-on: https://chromium-review.googlesource.com/759300
Commit-Queue: Christian Biesinger <cbiesinger@chromium.org>
Commit-Queue: Emil A Eklund <eae@chromium.org>
Reviewed-by: Emil A Eklund <eae@chromium.org>
Cr-Commit-Position: refs/heads/master@{#515024}
[add] https://crrev.com/4c6cc67b76861b1927bcad841b4eba11b779d1e8/third_party/WebKit/LayoutTests/css3/flexbox/bug750553.html