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Issue 159253 link

Starred by 2 users

Issue metadata

Status: Fixed
Owner: ----
Closed: Aug 2015
EstimatedDays: ----
NextAction: ----
OS: Mac
Pri: 2
Type: Bug

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Changing background-color and left at the same time will not change the background-color (under graphics acceleration)

Reported by, Nov 2 2012

Issue description

Chrome Version       : 22, Canary 25.0.1315.1
URLs (if applicable) :
OS version               : Mac OS X 10.8.2
Behavior in Safari 6 (if applicable): reproduces
Behavior in Firefox 16 (if applicable): Does not occur
Behavior in Chrome for Windows: reproduces

What steps will reproduce the problem?
1. Open attached BackgroundColorBug.html

What is the expected result?
All the boxes slowly change color.

What happens instead?
Only the boxes not moving or not using "-webkit-transform:rotateY(0deg)" actually change color.

2.0 KB View Download
Also filed as:
<rdar://problem/12628214> Changing background-color and left at the same time does not work
Can you reproduce it with latest Webkit Nightly? 

Download at:

Comment 3 by, Nov 5 2012

Labels: -Area-Undefined Area-WebKit WebKit-Rendering
Yes, it reproduces on the WebKit Nightly r133465.
Thanks for your feedback. Could you please file also a report at and post the webkit-bug-no here to track the issue? Thanks in advance.
Also, please note this affects customers using Tumult Hype (
Status: Untriaged
Project Member

Comment 9 by, Mar 10 2013

Labels: -Area-WebKit -WebKit-Rendering Cr-Content-Rendering Cr-Content
Project Member

Comment 10 by, Apr 5 2013

Labels: -Cr-Content Cr-Blink
Project Member

Comment 11 by, Apr 6 2013

Labels: -Cr-Content-Rendering Cr-Blink-Rendering
This also appears to affect animating left/top and border-radius properties.
It is still a problem in the latest Chrome Canary build, but this has recently been fixed in the latest WebKit nightly:

This is not just background-color, but also the text color property.  I've attached a reproduction for this case.
The WebKit fix does not seem to address it.
1.8 KB View Download
I filed this bug against WebKit:
Labels: -Cr-Blink-Rendering Cr-Blink-Layout
Migrate from Cr-Blink-Rendering to Cr-Blink-Layout

Comment 17 by, Aug 26 2015

Status: Fixed
This appears to be fixed, our behavior on the test case from comment 14 now matches FF and expectations. Please verify or reopen. Thanks!

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