[Webkit-unassigned] [Bug 83980] Fixed background is scrolling in http://www.nieuwecode.nl/ in Qt webkit2

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=83980


Yael <yael.aharon at nokia.com> changed:

           What    |Removed                     |Added
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 Attachment #138179|                            |review?
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--- Comment #1 from Yael <yael.aharon at nokia.com>  2012-04-20 15:45:22 PST ---
Created an attachment (id=138179)
 --> (https://bugs.webkit.org/attachment.cgi?id=138179&action=review)
Patch.

When a fixed position element does not have z-index explicitly specified, it does not create a stacking context. This results in fixed elements scrolling with the content layer.
This patch allows creating a stackig context for fixed positioned elements. Added a manual test because this patch takes effect only during scrolling.

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