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

So the two questions that came out of the call were:
* What types of clipping should `position-visibility` be checking for?
* When should it be calculated? (This is somewhat dependent on the first question.)

For the first question, it would be useful to hear from anchorpos users. Currently the spec only checks for `overflow` clipping between the anchor and the abspos CB. It doesn't check for visibility in the viewport or `clip-path` or anything else. Personally I think this is the right answer.

For the second question, WebKit re-evaluates after each layout, which means that there's no lagging across frames. We think this is better behavior for users, and would prefer if it were allowed by the spec.

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Received on Wednesday, 24 September 2025 18:39:49 UTC