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Issue 674853 link

Starred by 1 user
Status: WontFix
Owner:
sunyunjia@chromium.org
Closed: Dec 2016
Cc:
█ hdodda@chromium.org
nyerramilli@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:[DevTools] Webpage content is not seen on transform layer under 'Layers' section.

Reported by dchau...@etouch.net, Dec 16 2016 
Chrome Version: 57.0.2953.0 (Official Build)5cc5609d072e90e2b1fe5d9de04bf00d45c5a5c6-refs/heads/master@{#438989} 32.64-bit.
OS: Windows (7,8,10).

What steps will reproduce the problem?
1. Launch chrome, go to chrome://md-settings page and then open 'DevTools' window.
2. Go to 'Layers' section from 'Customize and control DevTools' menu list.
3. Now, observe the transform of 'Settings' page.

Webpage content is not seen on transform layer.
Webpage content should be seen on transform layer.

This is a regression issue, broken in M-57 series, will soon update other info.

Comment 1 by dchau...@etouch.net, Dec 16 2016

Labels: OS-Linux OS-Mac
This issue is also reproducible on Mac and Linux OS.

Below is manual regression range.

Good build: 57.0.2952.0
Bad build: 57.0.2953.0

Kindly review the attached screen-cast for reference.
Actual behavior.mp4
1.1 MB View Download
Expected behavior.mp4
706 KB View Download

Comment 2 by hdodda@chromium.org, Dec 16 2016

Cc: hdodda@chromium.org
Labels: hasbisect-per-revision
Owner: sunyunjia@chromium.org
Status: Assigned (was: Unconfirmed)
Using the per-revision bisect providing the bisect results,
Good build: 57.0.2951.0 (Revision : 438385)
Bad build: 57.0.2953.0 (Revision : 438989)

You are probably looking for a change made after 438874 (known good), but no later than 438875 (first known bad).

CHANGELOG URL:

The script might not always return single CL as suspect as some perf builds might get missing due to failure.
  
https://chromium.googlesource.com/chromium/src/+log/3a6310b801c1b5d36c887cdbdd3528ed80867554..4436064358a762936f8da853fc1271e036b96491

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

@sunyunjia - Could you please check whether this is caused with respect to your change, if not please help us in assigning it to the right owner.

Review-Url: https://codereview.chromium.org/2582473003

Thanks!

Comment 3 by rbyers@chromium.org, Dec 16 2016

Status: WontFix (was: Assigned)
This is now correct behavior - you're seeing the "slow scroll rects".  Disable the "show slow scroll rects" checkbox to see the content.  sunyunjia's change just fixed a bug here where these rects weren't working when the machine had no touch screen.  You can reproduce the same behavior before her change on a device with a touchscreen or by enabling chrome://flags#touch-events.

Comment 4 by dtapu...@chromium.org, Jan 6 2017

Labels: Hotlist-Input-Dev
►

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