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Issue 689940 link

Starred by 2 users
Status: Duplicate
Merged: issue 621748
Owner:
michae...@chromium.org
Closed: Feb 2017
Cc:
nyerramilli@chromium.org
rbasuvula@chromium.org
█ msrchandra@chromium.org
█ ranjitkan@chromium.org
dpa...@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Windows , Mac
Pri: 1
Type: Bug-Regression



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Regression: [MD Settings] Unnecessary scroll position changed after switching the tabs on 'Add languages' overlay .

Reported by dchau...@etouch.net, Feb 8 2017 
Chrome Version: 57.0.2987.37 (Official Build)47a57c88d21c9db6c802e723966c0d7a1e5a991c-refs/branch-heads/2987@{#374} 32/64-bit.
OS: Windows (7,8,10), Mac (10.11.6,10.12.1), Linux (14.04 LTS).

What steps will reproduce the problem?
1. Launch chrome, navigate to chrome://md-settings/languages and expand the 'Language' section.
2. Click on 'Add languages' button to open 'Add languages' overlay and scroll down the page.
3. Now, open NTP, come back to previous tab ('Add languages' page) and observe the scroll position.

Unnecessary page scrolled up.
Scroll position should not change.

This is a regression issue, broken in M-57 series, below is manual regression range.

Good build: 57.0.2944.0 
Bad build: 57.0.2945.0

kindly review the attached screen-cast for reference.
Actual behavior.mp4
970 KB View Download
Expected behavior.mp4
715 KB View Download

Comment 1 by rbasuvula@chromium.org, Feb 8 2017

Cc: rbasuvula@chromium.org
Labels: hasbisect-per-revision
Owner: michae...@chromium.org
Status: Assigned (was: Unconfirmed)
Using the per-revision bisect providing the bisect results,
Good build: 57.0.2944.0 (Revision: 436816).
Bad build: 57.0.2945.0 (Revision: 437133).

You are probably looking for a change made after 436893 (known good), but no later than 436894 (first known bad).

CHANGE-LOG URL:
---------------
https://chromium.googlesource.com/chromium/src/+log/03043071bd52d307fc2f33c8d2c7a2090dc8f0ac..10719a79d0d6cf3cee559771cb5cca8f78024b5d

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

@michaelpg: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://codereview.chromium.org/2523403003

Note :Able to reproduce the issue in Mac 10.12.2,win 7 and linux 14.04 and Beta #57.0.2987.37,Dev #58.0.3004.3 and Canary #58.0.3005.2

Comment 2 by michae...@chromium.org, Feb 16 2017

Mergedinto: 621748
Status: Duplicate (was: Assigned)
Seems to be a side effect of issue 621748. My CL causes the top checkbox to be focused when the dialog is opened; on switching back from another tab, the top checkbox (still considering itself focused) forces itself to be scrolled into view.
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