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The section on paragraphs says [[ Paragraphs in flow content are defined relative to what the document looks like without the a, ins and del elements complicating matters, since those elements, with their hybrid content models, can straddle paragraph boundaries. ]] But AFAICT the noscript (when scripting is disabled), object, video, audio and canvas elements can straddle paragraph boundaries, too.
They don't straddle them, they just cause there to be overlapping/nested paragraphs. I considered making this non-conforming, but I figure that will just annoy people. So I added an example and added a sentence saying conformance checkers may want to warn about it.