[Webkit-unassigned] [Bug 171140] [iOS] REGRESSION (r209409): getBoundingClientRect is wrong for fixed-position elements in resize/orientationchange

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon Apr 24 20:40:26 PDT 2017


https://bugs.webkit.org/show_bug.cgi?id=171140

--- Comment #6 from Tim Horton <thorton at apple.com> ---
It turns out (after hours of debugging) that the problem here is simple: WebPage::dynamicViewportSizeUpdate was not updated to set the layoutViewportOverrideRect instead of the customFixedPositionLayoutRect like WebPage::updateVisibleContentRects was.

I have tested after making this change and things are better; I'll make some tests and post a patch.

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