[Webkit-unassigned] [Bug 42949] Incorrect repaint on scrolling with position:fixed element on Windows

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=42949





--- Comment #6 from chromium at hybridsource.org  2010-07-28 17:56:10 PST ---
I'm not sure this bug is specific to position:fixed and certainly not exclusive to Windows, the linked webpage was simply where I was able to reproduce this rendering flakiness consistently.  As noted earlier, I can also reproduce consistently on Chromium for FreeBSD, which basically uses the same rendering pipeline as linux.  I have also noticed that if I quickly scroll a page up or down, there are occasionally artifacts where a rectangle in the middle of the page is missing, but this is tougher to reproduce.  Perhaps this bug is related to scrolling movements somehow, as that was how I was able to reproduce the rendering error shown in the right-hand part of the attached image.

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