[Webkit-unassigned] [Bug 243573] IntersectionObserver intersectionRatio < 1 observed

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=243573

Vitor Roriz <vitor.roriz at apple.com> changed:

           What    |Removed                     |Added
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                 CC|                            |vitor.roriz at apple.com

--- Comment #9 from Vitor Roriz <vitor.roriz at apple.com> ---
I've just noticed we have already imported tests for it and we are succeeding on both without a patch:

1. /LayoutTests/imported/w3c/web-platform-tests/intersection-observer/intersection-ratio-with-fractional-bounds.html
2. /LayoutTests/imported/w3c/web-platform-tests/intersection-observer/intersection-ratio-with-fractional-bounds-2.html


Reading the chromium thread https://bugs.chromium.org/p/chromium/issues/detail?id=1020466, for them this would happen when [a] running the test in a process-isolated cross-origin iframe, like when hosting it in fiddle, [b] regular case, out of iframe.

Their related fix is to address [b], which doesn't happen for us. While [a] happens for gecko, blink and webkit and it seems to be related to the propagation window resizing to the iframe process.

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