Re: [csswg-drafts] [css-anchor-position-1] position-visibility: anchors-visible should be clear about when is visibility determined (#12732)

> > It doesn't? Safari does it during the style / layout loop afaict.
> 
> Blink does do it during the loop, via special internal versions of `IntersectionObserver`, like I mentioned above (that's what kDeliverDuringPostLayoutSteps does).

No, were talking about different loops. I'm talking about the interleaved style / layout loop, not the html rendering steps.

That is, in WebKit this runs during forced layouts like getBoundingClientRect for example (@fantasai or @anttijk can correct me if I'm wrong).

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Received on Monday, 29 September 2025 21:41:27 UTC