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Issue 761709 link

Starred by 3 users
Status: Duplicate
Merged: issue 760886
Owner:
█ trchen@chromium.org
Last visit > 30 days ago
Closed: Sep 2017
Cc:
pdr@chromium.org
nyerramilli@chromium.org
rbasuvula@chromium.org
█ msrchandra@chromium.org
█ ranjitkan@chromium.org
yutak@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Mac
Pri: 1
Type: Bug-Regression



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Regression: White space is seen on scrolling the page upwards.

Reported by aiman.an...@etouch.net, Sep 4 2017 
Chrome version: 63.0.3204.0 (Official Build)a3c5c018fa27742e47fdf12d1a20ff92962e832d-refs/heads/master@{#499404}(64 Bit).

OS: Mac(10.12.3, 10.12.5).

Test URL: https://www.google.co.in/search?q=pdf+test&oq=pdf+test&aqs=chrome..69i57j0l5.2190j0j8&sourceid=chrome&ie=UTF-8

Steps to reproduce:
1.Launch chrome, open NTP and go to the above URL
2.Scroll down, open a PDF file and let it load completely.
3.Click on Back navigation button and scroll the page upwards quickly.
4.Observe.

Actual Result: White space is seen.
Expected Result: White space should note be seen.

This is Regression Issue broken in M-62 and will soon provide other bisect info.

Note: Will soon update Bisect info.
Actual Result.mov
3.7 MB Download

Comment 1 by aiman.an...@etouch.net, Sep 4 2017 

Manual Bisect Info:
Good Build: 62.0.3200.0
Bad Build:  62.0.3201.0

Note: Issue is MAC specific.

Comment 2 by aiman.an...@etouch.net, Sep 4 2017

Cc: yutak@chromium.org
Labels: hasbisect
Owner: trchen@chromium.org
Status: Assigned (was: Unconfirmed)
Note: Unable to provide Narrow Bisect as not able to reproduce the issue on Chromium Builds, hence providing suspect through CL.

Change LOG URL:
https://chromium.googlesource.com/chromium/src/+log/62.0.3200.0..62.0.3201.0?pretty=fuller&n=10000

Suspecting: r498685 or 498363?

@trchen: Kindly help to re-assign if your change is not the cause for this issue.
Expected Result.mov
6.5 MB Download

Comment 3 by msrchandra@chromium.org, Sep 4 2017

Labels: ReleaseBlock-Stable
Adding RB Label as this is a recent Regression. Please remove if not required.
Thank You.

Comment 4 by yutak@chromium.org, Sep 5 2017

Components: Blink>Compositing
+Compositing component

This could be "work as intended".

Comment 5 by schenney@chromium.org, Sep 5 2017

Cc: pdr@chromium.org
Labels: PaintTeamTriaged-20170905 BugSource-Chromium
Could also be

https://chromium.googlesource.com/chromium/src/+/92cceac320fd87028693dfaf7c19abd3c6bc4dc1

Comment 6 by pdr@chromium.org, Sep 5 2017

Labels: -hasbisect Needs-Bisect
This could definitely be https://chromium.googlesource.com/chromium/src/+/92cceac320fd87028693dfaf7c19abd3c6bc4dc1. Or Tien-Ren's change.

Can we get a more narrow bisect?

Comment 7 by schenney@chromium.org, Sep 5 2017 

Comment #2 indicated that it did not reproduce in Chromium, so our narrow bisect tool doesn't work. You could possibly try building an official build and reverting the suspect patches to see what happens. Lots of work, compounded by the fact it's Mac only.

Another possibility is to revert one of them and wait for Canary.

Comment 8 by aiman.an...@etouch.net, Sep 6 2017

Labels: -Needs-Bisect
Unable to provide Narrow Bisect as not able to reproduce the issue on Chromium Builds

Comment 9 by aelias@chromium.org, Sep 7 2017

Mergedinto: 760886
Status: Duplicate (was: Assigned)
►

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