Bug 106712 - Fixed elements jiggle during scroll on some sites that cause layouts with an onscroll handler
Summary: Fixed elements jiggle during scroll on some sites that cause layouts with an ...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Layout and Rendering (show other bugs)
Version: 528+ (Nightly build)
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL: http://www.redfin.com/CA/Mountain-Vie...
Keywords:
Depends on:
Blocks:
 
Reported: 2013-01-11 15:38 PST by Beth Dakin
Modified: 2013-01-30 11:43 PST (History)
2 users (show)

See Also:

Attachments
Test case (23.04 KB, text/html)
2013-01-11 15:39 PST, Beth Dakin 		no flags Details
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Description Beth Dakin 2013-01-11 15:38:54 PST 
This affects redfin.com and possibly other sites as well. Reduction attached.

If you scroll the test case, the green box sometimes jiggles inappropriately. The test has Javascript that runs during an onscroll handler which forces a layout. I believe that the jiggling is happening because the main thread doesn't have the updated scroll position from the scrolling thread.

I'm not sure how to address this problem.
Comment 1 Beth Dakin 2013-01-11 15:39:43 PST 
Created attachment 182436 [details]
Test case
Comment 2 Beth Dakin 2013-01-11 15:41:38 PST 
This is probably the same as <rdar://problem/12723953>