Re: [whatwg/dom] attachShadow default custom element registry (Issue #1407)

sorvell left a comment (whatwg/dom#1407)

@annevk it looks like Safari TP 238 is failing that test: https://wpt.live/custom-elements/registries/ShadowRoot-init-declarative.html

Is it the case that the behavior when the host has a `null` registry has a special carve out?

I am more concerned that `attachShadow` does not "inherit" a scoped registry: https://codepen.io/Steve-Orvell/pen/ZYpGVPd?editors=1000. On that example, Safari is OK and Chrome Canary 147.0.7710.0 is failing.



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Received on Sunday, 1 March 2026 01:29:39 UTC