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Issue metadata

Status: Fixed
Owner:
Closed: Mar 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Windows , Mac
Pri: 1
Type: Bug-Regression



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scaleY animation changes visual width

Reported by everdime...@gmail.com, Feb 25 2018

Issue description

UserAgent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 Safari/537.36

Example URL:
https://codepen.io/everdimension/pen/ddqEYV

Steps to reproduce the problem:
1. open https://codepen.io/everdimension/pen/ddqEYV
2. See that the bars change in width a little bit

What is the expected behavior?
The bars' widths should not change

What went wrong?
Although we're only animating vertical scale, the bars appear to change in width a little bit, creating an unpleasant flicker effect.

Does it occur on multiple sites: N/A

Is it a problem with a plugin? No 

Did this work before? N/A 

Does this work in other browsers? Yes

Chrome version: 63.0.3239.132  Channel: n/a
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version:
 
Reproduces on latest chrome, too: 64.0.3282.186
Components: Blink>Animation
Labels: Needs-Triage-M64
Labels: Needs-Bisect
Status: Untriaged (was: Unconfirmed)
I can see it on Linux @64, I don't see it on Linux @ tip of tree.
Components: Internals>Compositing
Labels: -Pri-2 -Type-Compat -Needs-Bisect hasbisect-per-revision Triaged-ET RegressedIn-65 M-64 FoundIn-64 Target-64 OS-Linux OS-Mac Pri-1 Type-Bug-Regression
Owner: sunxd@chromium.org
Status: Assigned (was: Untriaged)
Able to reproduce the issue on Mac 10.13.3, Win-10 and Ubuntu 14.04 using chrome stable version #64.0.3282.186 but the same is not reproducible in the latest canary #66.0.3355.0 and latest beta #65.0.3325.88.

Reverse Bisect Information:
=====================
Good build: 65.0.3318.0
Bad Build : 65.0.3317.0

Change Log URL: 
https://chromium.googlesource.com/chromium/src/+log/7f9da00a4990a7a593aa7c27c827e5d8f7ac6cfd..34cfc6e4d65c2ccddebce50c974a0e1bb67b5260

From the above change log suspecting below change
Change-Id: Ied2607238dc9b01a3ec2e6d9463c36adb41dbc93
Reviewed-on: https://chromium-review.googlesource.com/854976

sunxd@ - Could you please check and merge the fix to M-64 if it is a valid candidate.

Thanks...!!

Comment 6 by sunxd@chromium.org, Feb 27 2018

Cc: gov...@chromium.org
We previously decided to merge this to M65 since there's not much time left for M64, also M65 is going to release on March 6th. I think we can wait until the good build is released.

cc govind@ for reviewing this decision.

Comment 7 by gov...@chromium.org, Feb 27 2018

Cc: abdulsyed@chromium.org
This is fixed on M65 latest beta #65.0.3325.88 so no merge is needed to M65, correct?

We're not planning any further M64 release. +abdulsyed@ (M64 TPM) to confirm.

Comment 8 by sunxd@chromium.org, Feb 27 2018

Yes, the fix patch is already merged into M65.
Labels: Hotlist-Polish

Comment 10 by sunxd@chromium.org, Mar 20 2018

Status: Fixed (was: Assigned)
Close this bug since the fix is landed in M65 and no M64 releases are planned.

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