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Issue 646341 link

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Issue metadata

Status: Fixed
Owner:
Closed: Sep 2016
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Windows
Pri: 1
Type: Bug-Regression



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Regression:Drop down list appears transparent on resizing the browser window in "support.google.com"

Reported by adha...@etouch.net, Sep 13 2016

Issue description

Version: 55.0.2859.0 3f63c614e8c4501b1bfa3f608e32a9d12618b0a0-refs/heads/master@{#418117} (64-bit)
OS: Windows (7,8,8.1,10),Linux (14.04 LTS)

TEST URL:https://support.google.com/

What steps will reproduce the problem?
(1)Launch chrome and navigate to the above url
(2)Click on the Language drop down list at the bottom of the page.
(3)Resize the browser window 2-3 times from R.H.S to L.H.S(Kindly refer the video)
(4)Observe.

Actual:Drop down list appears transparent on resizing the browser window.

Expected:Drop down list should be displayed properly on resizing the browser window.

This is a Regression issue broken in M-55,below is the Narrow bisect info: 
https://chromium.googlesource.com/chromium/src/+log/b057620e2918d41effdb2878814706f437fc567f..77e72c03da749413cecee992ba27636fdd6bbfe1?pretty=fuller&n=1000

Suspecting:r417858?

Good build:55.0.2807.0
Bad build:55.0.2808.0

Kindly help to re-assign if your change is not the cause for this issue.

Note:Above issue is not seen on Mac OS.

 
Actual result.mp4
1.4 MB View Download
Expected result.mp4
1.3 MB View Download
Labels: ReleaseBlock-Stable
Adding release block label, please undo if not the case.

Comment 2 by flackr@chromium.org, Sep 13 2016

Status: Started (was: Assigned)
https://codereview.chromium.org/2337273002 should resolve this issue.
Project Member

Comment 3 by bugdroid1@chromium.org, Sep 13 2016

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a12e7a002f85301bf013b45e6e8bb61455304a76

commit a12e7a002f85301bf013b45e6e8bb61455304a76
Author: flackr <flackr@chromium.org>
Date: Tue Sep 13 21:29:55 2016

Disable local background equivalence when we have a box shadow due to painting bug.

BUG= 646464 , 646341 

Review-Url: https://codereview.chromium.org/2337273002
Cr-Commit-Position: refs/heads/master@{#418374}

[modify] https://crrev.com/a12e7a002f85301bf013b45e6e8bb61455304a76/third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp

Comment 4 by flackr@chromium.org, Sep 13 2016

Status: Fixed (was: Started)

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