[Webkit-unassigned] [Bug 154399] Position fixed is buggy with overflow:auto scrolling

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=154399

--- Comment #3 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
I don't see severe jumping or flicking of the top and bottom bars in that testcase, on 10.3.2. I do see some subpixel jittering, which is because WebCore rounds scroll positions to integral values, and when the page has a non-unit scale there's some rounding going on.

On what device and iOS version do you see the more severe flickering?

I don't think this is related to bug 172349.

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