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Issue 811710 link

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Issue metadata

Status: Fixed
Owner:
Closed: Apr 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Mac
Pri: 2
Type: Bug-Regression



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Regression: [DevTools]Devtools window appears blank after clicking on ‘Learn More’ link in sources section of DevTools.

Reported by pranjali...@etouch.net, Feb 13 2018

Issue description

Chrome Version:66.0.3346.0 (Official Build) 21b7a819b0547b7ade4252a162cc4c98ba29f149-refs/heads/master@{#536238}(64 bit)

OS: Mac(10.12.6, 10.13.1, 10.13.4).

Steps to reproduce:
1. Launch chrome ,navigate to NTP and open devtools.
2. Go to ‘source’ section and click on ‘Learn More’ link.
3. Again navigate back to DevTools window and observe.

Actual: DevTools window appears blank after clicking on ‘Learn More’ link in sources section of DevTools. 
Expected: DevTools window should not appear blank after clicking on ‘Learn More’ link in sources section of DevTools. 

This is Regression issue broken in 'M-66’ and Using the per-revision bisect providing the bisect results:

Good Build:66.0.3345.0 (Revision : 536027)
Bad Build:66.0.3346.0  (Revision : 536238)

You are probably looking for a change made after 536162 (known good), but no later than 536163 (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/088609dd812fbf6084a5bfbdfcb7e5252265ff46..27ecbe56d89bc343463f3401079da22dccca3322

Suspect: https://chromium.googlesource.com/chromium/src/+/27ecbe56d89bc343463f3401079da22dccca3322

@ccameron:  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.

Note: Issue is not seen on Windows(7,8,8.1,10) and Linux(14.04 LTS) machines.

Kindly refer attached screen cast 
 
Actual_result.mov
1.6 MB View Download
Expected_result.mov
1.9 MB View Download
Labels: RegressedIn-66 FoundIn-66 Target-66
Labels: -Pri-1 Pri-2
Mac triage: downgrading this to Pri-2.
Cc: pbomm...@chromium.org manoranj...@chromium.org
Labels: ReleaseBlock-Stable
Adding release blocker label for this issue.Please reduce priority or remove if not the case.

Thank You!
Likely the same underlying issue as  issue 813225 , regressed non-surface-sync behavior while surface-sync was enabled.
Surface sync is now enabled, and if it sticks, then the old path will go away.
Labels: TE-Verified-M67 TE-Verified-67.0.3375.0
Update:
Rechecked the above issue on Mac(10.12.6,10.13.1,10.13.4)OS using latest canary(build#67.0.3375.0) and fix is working as intended.
Please refer attached screen cast for the same.

Thank you...
Canary_behaviour.mov
7.5 MB View Download
As it is WAI on M67, could you please merge the fix to M66 if it is safe merge.

Thanks..~
Just a heads up, M66 Stable cut is on April 12th, 10 days away. This issue is marked as RB-Stable for 66. Please make sure to address this issue prior to stable cut. Thanks! 
Status: Fixed (was: Assigned)
The fix (surface sync enable) was merged to 66.
Labels: Merge-TBD
[Auto-generated comment by a script] We noticed that this issue is targeted for M-66; it appears the fix may have landed after branch point, meaning a merge might be required. Please confirm if a merge is required here - if so add Merge-Request-66 label, otherwise remove Merge-TBD label. Thanks.
Labels: -Merge-TBD

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