[whatwg/dom] I can't find where inserting DocumentType nodes into Element nodes is disallowed (Issue #1278)

### What is the issue with the DOM Standard?

https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity seems like it should disallow it but I can't find any step that does so. Am I missing something obvious?

Chrome and Firefox disallow such insertions. http://software.hixie.ch/utilities/js/live-dom-viewer/?saved=12589

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Received on Wednesday, 17 April 2024 07:51:36 UTC