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Issue metadata

Status: Assigned
Owner:
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Windows , Mac
Pri: 2
Type: Bug-Regression



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Table borders disappear when zooming out

Reported by bug.iss...@gmail.com, Apr 18 2018

Issue description

UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3399.0 Safari/537.36

Steps to reproduce the problem:
1. Open https://jsfiddle.net/BugIssuer/t3k2zLoL/
2. Zoom out in Chrome (Ctrl -)
3. At some point the borders disappear. On my laptop, where the Windows display scaling is set to 150%, The horizontal borders disappear (the vertical borders are visible) at Chrome zoom 50%, and the vertical borders disappear (the horizontal borders are visible) at Chrome zoom 33%. At zoom 25%, no borders are visible.
With other Windows display scaling settings, the zoom level where this behavior occurs will be different.

What is the expected behavior?
Zooming out is possible without borders disappearing.

What went wrong?
The borders disappear.

Did this work before? N/A 

Does this work in other browsers? N/A

Chrome version: 68.0.3399.0  Channel: canary
OS Version: 10.0
Flash Version: 

If I remove the background-color style from the div selector, the borders don't disappear when zooming out.
 
Labels: Needs-Triage-M68
Components: Blink>Paint
Cc: schenney@chromium.org susan.boorgula@chromium.org
Labels: -Type-Bug -Pri-2 hasbisect-per-revision Target-67 RegressedIn-61 Triaged-ET FoundIn-67 Target-66 FoundIn-66 FoundIn-68 Target-68 OS-Linux OS-Mac Pri-1 Type-Bug-Regression
Owner: ka...@opera.com
Status: Assigned (was: Unconfirmed)
Reporter@ Thanks for the issue.

Able to reproduce this issue on Windows 10, Mac OS 10.12.6 and Ubuntu 14.04 on the latest Canary 68.0.3400.0 and latest Stable 66.0.3359.117 as per the original comment.

Bisect Information:
===================
Good Build: 61.0.3141.0 (Revision - 482153)
Bad Build : 61.0.3142.0 (Revision - 482491)

On executing the per-revision bisect script, below is the Changelog URL:

https://chromium.googlesource.com/chromium/src/+log/1ade9dfba70113fb2e9898bb187248ed18d07a05..eb499bd02c68f68b5f74d534a673e920f8e7a5e6

From the above Changelog, suspecting the below change:
Reviewed-on:  https://chromium-review.googlesource.com/525536

karlo@ Please check and confirm if this issue is related to your change, else help us in assigning to the right owner.
As mails to Karlo@ are bounced, CC'ing reviewer schenney@ for further help in this issue.

Thanks.
Labels: M-68
Cc: -schenney@chromium.org
Owner: schenney@chromium.org
Known issue. I think my current plan is to revert that old change (it caused lots and lots of issues) and work on redoing it without the problems.
Labels: -Pri-1 Pri-2
This is not a P1. Zoom out is not an accessibility issue and this has been broken for a long time now.

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