RESOLVED FIXED 85647
box-shadow causes overlay scrollbars to be in the wrong position when element is composited 
https://bugs.webkit.org/show_bug.cgi?id=85647
Summary box-shadow causes overlay scrollbars to be in the wrong position when element...
Thomas Fuchs
Reported 2012-05-04 11:49:56 PDT
Created attachment 140290 [details] reduced test case Using CSS `box-shadow` on an element that shows scrollbars (overflow: auto) can cause the scrollbars of the element to appear in the wrong position. A related problem is that in the provided reduced test case, enabling hardware acceleration for the parent element causes the child's scrollbars to disappear completely. This problem happens in both the latest release version of Chrome and in the Safari 5.2 beta (I could not test on Safari 5.1, but it is likely to be a problem there too).
Attachments
reduced test case (1.29 KB, text/html)
2012-05-04 11:49 PDT, Thomas Fuchs 		no flags
Details
Patch (9.00 KB, patch)
2012-09-07 14:47 PDT, Simon Fraser (smfr) 		jamesr: review+
DetailsFormatted DiffDiff
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Radar WebKit Bug Importer
Comment 1 2012-05-04 11:52:16 PDT
<rdar://problem/11386222>
Simon Fraser (smfr)
Comment 2 2012-05-04 11:57:40 PDT
I can't find any code that positions the scrollbar layers in RenderLayerBacking. Weird.
Simon Fraser (smfr)
Comment 3 2012-09-07 14:47:51 PDT
Created attachment 162874 [details] Patch
Simon Fraser (smfr)
Comment 4 2012-09-07 17:49:00 PDT
http://trac.webkit.org/changeset/127943
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