NEW 21938
suboptimal scrolling performance in gmail (firefox3 is much faster) 
https://bugs.webkit.org/show_bug.cgi?id=21938
Summary suboptimal scrolling performance in gmail (firefox3 is much faster)
Darin Fisher (:fishd, Google)
Reported 2008-10-28 15:59:59 PDT
suboptimal scrolling performance in gmail (firefox3 is much faster) firefox3 scrolling performance degrades to match webkit levels when a chat window is showing. the chat window in gmail is rendered using a fixed position element, so it would appear that firefox3 is discovering that it should not optimize the scrolling due to the presence of a fixed position element. webkit would suffer from bug 5909 on gmail (when a chat window is exposed) except for the fact that the frame being scrolled has a transparent background. the parent to the frame has a solid white background, so the net result is a white background. i suspect that firefox3 notices this and then determines that it is safe to do optimized scrolling. webkit should do the same. i still need to confirm this theory ;-)
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Jon@Chromium
Comment 1 2008-11-21 15:46:35 PST
Reported against Chromium, see http://code.google.com/p/chromium/issues/detail?id=104
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