Bug 101252 – Changing background-color and left at the same time will not change the background-color (under graphics acceleration)

• Status: RESOLVED
• Resolution: WORKSFORME
• Component: Layout and Rendering

[Jonathan Deutsch]

Created attachment 172395 [details]
Demonstrates Bug

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

Steps to Reproduce:
1. Open attached BackgroundColorBug.html

Expected Results:
All the boxes slowly change color.

Actual Results:
Only the boxes not moving or not using "-webkit-transform:rotateY(0deg)" actually change color.

Regression:
Has happened for a while, not new to 6.0, but still bad.

Notes:
Behavior in Chrome 22, Canary 25.0.1315.1: reproduces
Behavior in Chrome for Windows: reproduces
Behavior in Firefox 16 (if applicable): Does not occur

Chromium bug:
http://code.google.com/p/chromium/issues/detail?id=159253

Radar:
<rdar://problem/12628214> Changing background-color and left at the same time does not work

This affects customers using Tumult Hype (http://tumult.com/hype).

[Jonathan Deutsch]

And of course: reproduces on the WebKit Nightly r133465 and Safari 6.0.2

[Yuki Sekiguchi]

Created attachment 204701 [details]
Patch

[Build Bot]

Comment on attachment 204701 [details]
Patch

Attachment 204701 [details] did not pass win-ews (win):
Output: http://webkit-queues.appspot.com/results/923080

New failing tests:
fast/media/mq-transform-03.html
fast/media/mq-transform-02.html
platform/win/accessibility/multiple-select-element-role.html

[Build Bot]

Created attachment 204754 [details]
Archive of layout-test-results from APPLE-EWS-6 for win-future

The attached test failures were seen while running run-webkit-tests on the win-ews.
Bot: APPLE-EWS-6  Port: win-future  Platform: CYGWIN_NT-6.1-WOW64-1.7.20-0.266-5-3-i686-32bit

[Yuki Sekiguchi]

Created attachment 204879 [details]
Patch

[Jonathan Deutsch]

The patch fixes the background-color issue, however the same problem occurs with setting the text color for a div.  I've added a reproduction case which demonstrations the problem (TextColorBug.html).

[Jonathan Deutsch]

Created attachment 208203 [details]
Demonstrates same bug but with text color

[Jonathan Deutsch]

I filed this new bug for the text color issue:
https://bugs.webkit.org/show_bug.cgi?id=119524

[Simon Fraser (smfr)]

Does this bug still apply in Safari 9?

[Yuki Sekiguchi]

I checked Demonstrates Bug and confirmed that it wasn't reproducible on Safari 9.0.3. However, Bug 119524 remains.