Bug 89897

Summary: Fixed positioning is broken when body has a webkit-transform style
Product: WebKit Reporter: jmayhew
Component: Layout and RenderingAssignee: Nobody <webkit-unassigned>
Status: RESOLVED INVALID    
Severity: Normal CC: simon.fraser
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: All   
OS: All   
Attachments:
Description Flags
This file has a fixed position div (Blue) that incorrectly scrolls with the page content. IF you remove the webkit-transform from the body element, the blue div no longer scrolls. none

jmayhew
Reported 2012-06-25 11:18:22 PDT
Created attachment 149329 [details] This file has a fixed position div (Blue) that incorrectly scrolls with the page content. IF you remove the webkit-transform from the body element, the blue div no longer scrolls. Applying a webkit-transform to the body breaks the positioning of all fixed positioned elements. If you remove the webkit-transform from the body, fixed positioned content is then properly positioned and no longer scrolls with the page content. The attached file provides an example.
Attachments
This file has a fixed position div (Blue) that incorrectly scrolls with the page content. IF you remove the webkit-transform from the body element, the blue div no longer scrolls. (4.27 KB, text/html)
2012-06-25 11:18 PDT, jmayhew 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Simon Fraser (smfr)
Comment 1 2012-06-27 08:30:52 PDT
The spec says that transformed elements act as fixed position containers, so this behaves correctly.
jmayhew
Comment 2 2012-06-27 09:05:12 PDT
(In reply to comment #1) > The spec says that transformed elements act as fixed position containers, so this behaves correctly. Thanks for the info. That is good to know.
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