Bug 102836

Summary: Compositing layer momentarily disappearing when increasing in height in Safari
Product: WebKit Reporter: John Barr <johnbarr>
Component: Layout and RenderingAssignee: Nobody <webkit-unassigned>
Status: UNCONFIRMED    
Severity: Normal CC: simon.fraser
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: Mac   
OS: OS X 10.8   
Attachments:
Description Flags
a repro case none

John Barr
Reported 2012-11-20 14:09:17 PST
Created attachment 175275 [details] a repro case Affects: - iOS 6 Safari, iPad + iPod - Desktop Safari Version 6.0.1 (8536.26.14) on a OSX version 10.8.2 Other browsers tested: - Chrome mobile + Chrome desktop (not affected) In the attached repro case a composting layer (blue) is growing larger due to a child (red) being hidden/shown. This is causing the layer behind the blue layer (green) to be shown momentarily where the blue "Before Text" is even though this portion of the layer is not changing. Note that making textDiv a compositing layer does not help. Additionally toggling making textDiv overflow:hidden and toggling its height between a small and large value produces the same effect. Bug: Compositing layer momentarily disappearing when increasing in height in Safari.
Attachments
a repro case (42.21 KB, text/html)
2012-11-20 14:09 PST, John Barr 		no flags
Details
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Simon Fraser (smfr)
Comment 1 2012-11-23 11:38:00 PST
Looks like a tiled layer flicker. Should be fixed on TOT. Please test there.
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