[csswg-drafts] [css-scroll-anchoring-1] Questions about anchor node selection

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

== [css-scroll-anchoring-1] Questions about anchor node selection ==
Hello! I'm working on implementing this specification in Gecko. Here's the [intent email](https://groups.google.com/forum/#!topic/mozilla.dev.platform/4TxLKumAOiE).

I have a few questions regarding the anchor node selection algorithm. [[ref]](https://drafts.csswg.org/css-scroll-anchoring/#anchor-node-selection)

1. Should `position: sticky` be considered an excluded sub tree like `position: fixed`?
1. Should scrolling boxes be considered opaque for the purposes of candidate selection? (e.g. they can be scroll anchors but stop candidate selection from traversing their children) If not, then it seems a node could be the anchor for two different scrolling boxes. I'm unsure if that's desired.

cc @skobes @theres-waldo

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/3319 using your GitHub account