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Regression: Unwanted white line is seen on sign in overlay after clicking on Sign in to Chrome' button multiple time.
Reported by
rk...@etouch.net,
Oct 27 2016
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Issue descriptionChrome Version: 56.0.2902.0 Revision 22203b32bdae9236d23cc89e70772721315f2d1f-refs/heads/master@{#427892} OS: Mac Retina(10.11.5) What steps will reproduce the problem? (1) Launch chrome, navigate to chrome://settings page (2) Click on 'Sign in to Chrome' button multiple time and observe on sign in overlay. Actual: Unwanted white line is seen on sign in overlay after clicking on Sign in to Chrome' button. Expected: No such a white line is seen on sign in overlay after clicking on Sign in to Chrome' button. This is regression issue, broken in 'M-55', will soon update the other info: Good Build: 55.0.2869.0 Bad Build: 55.0.2871.0 Note: Issue is not seen on Mac(10.10.5), Windows and Linux OS.
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Oct 27 2016
Working on bisect. Will provide the info soon
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Oct 27 2016
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Oct 31 2016
Unable to reproduce the scenario, tested this issue on Mac 10.11.6 with chrome version 55.0.2871.0 Observed that no white line is displaying in sign in overlay screen. Please check the attached screen-cast and let us know your observations.
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Oct 31 2016
**** Bulk edit - please ignore if not applicable **** A friendly reminder that M55 Stable is launch is coming soon! Your bug is labelled as Stable ReleaseBlock, pls make sure to land the fix and get it merged into the release branch ASAP so it gets enough baking time in Beta (before Stable promotion). Thank you!
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Nov 1 2016
Narrow Bisect: https://chromium.googlesource.com/chromium/src/+log/3cb38fd23571822bf08c79d90a0ec49ea486492a..45903b6bfa81d0257af4da576e8edee825093b6b?pretty=fuller&n=1000 Suspecting: r420575 @qiankun.miao: Please help me to reassign this issue, if your change is not cause for it.
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Nov 2 2016
I can reproduce this bug on MacBook Pro with Intel Iris Pro Graphics 5200 running Mac OSX 10.11. After reverting https://codereview.chromium.org/2356213004, the bug disappears. Assign chrishtr to take a look.
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Nov 3 2016
I can't reproduce this on a MacBook Pro / Retina / 10.12.1 / Intel Iris. Where is the unwanted white line? Could you please upload a screenshot or video?
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Nov 7 2016
**** Bulk edit - please ignore if not applicable **** A friendly reminder that M55 Stable is launch is coming soon! Your bug is labelled as Stable ReleaseBlock, pls make sure to land the fix and get it merged into the release branch ASAP so it gets enough baking time in Beta (before Stable promotion). Thank you! Also due to Thanksgiving holidays in US, please make sure all fixes are ready and merged to M55 latest by 5:00 PM PT Friday, 11/18/16.
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Nov 7 2016
This bug only can be reproduced on Mac OSX 10.11. 10.12 doesn't have this regression. Attached video to show the bug.
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Nov 7 2016
This is a bug in macOS 10.11. The issue is that CALayers sometimes get "cracks" between them. I've seen it in other applications than just Chrome. The video above shows a "crack" appearing between two CALayers (corresponding to cc tiles). This is a MacOS issue so marking ExternalDependency. It may be that this was fixed in 10.12 -- I only upgraded to 10.12 a few days ago, so I don't know its status.
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Nov 8 2016
ccameron@ - I guess this is from scaling web content?
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Nov 14 2016
I'm not sure about the exact cause -- it very well may be because of scaled web contents.
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May 9 2017
** Bulk edit ** We are cleaning up our Pri-1 bugs for Chrome signin and profiles-related issues. If this bug is actually P1, feel free to set the priority back and add a comment justifying P1.
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May 9 2017
Dropping to P3. I haven't seen this in a while, so I suspect the macOS bug may have been fixed. |
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Comment 1 by tkonch...@chromium.org
, Oct 27 2016