[css-properties-values-api] 2.8 Shadow DOM implies @property rules should work from shadow tree

[Kaiido]

2.8 Shadow DOM currently reads

All registrations, whether they appear in the outermost document or within a shadow tree, interact in a single global registration map for the Document.

Which seems to imply that it's possible to make such a registration from a shadow tree. There is even a test for this: https://github.com/web-platform-tests/wpt/blob/master/css/css-properties-values-api/at-property-shadow.html
However in #846 it's been decided that it shouldn't work from shadow DOM, at least for now. Implementations seem to agree on this.

Should the specs and test be edited?

[zrhoffman]

Should the specs and test be edited?

The current discussion is in w3c/csswg-drafts#10541.

[Kaiido]

Oh, sorry I missed it moved to csswg-drafts. Thanks for the link.