[csswg-drafts] [css-anchor-position] Absolutely positioned element does not find fixed anchor (#10419)

RWDavid has just created a new issue for https://github.com/w3c/csswg-drafts:

== [css-anchor-position] Absolutely positioned element does not find fixed anchor ==
I am currently creating small test cases to solidify my understanding of the anchor positioning spec.

Here is [one such test case](https://codepen.io/David-Choi-the-reactor/pen/WNBomzM) that utilizes a `position: fixed` anchor and a `position: absolute` anchored element.

```html
<style>
  .anchor {
    anchor-name: --anchor-el;
    position: fixed;

    background: blue;
    width: 150px;
    height: 150px;
    border: 2px solid white;
  }

  .anchee {
    position: absolute;
    position-anchor: --anchor-el;
    inset-area: end;

    width: 100px;
    height: 100px;
    background: red;
    border: 2px solid white;
  }
</style>

<div style="position: relative;">
    <div class="anchor"></div>  
    <div class="anchee"></div>
</div>
```

It seems like the anchor is an [acceptable anchor element](https://drafts.csswg.org/css-anchor-position-1/#acceptable-anchor-element), but the anchored element does not seem to accept that element as an anchor (at least on Chrome Canary version 127.0.6532.0).

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/10419 using your GitHub account


-- 
Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config

Received on Monday, 10 June 2024 21:54:50 UTC