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Hblee
dd7378bbd9
A `<br>` is a void element but `resolveSingleChildTextTarget` treated a lone `<br>` child as the element's text target. So `getOwnText(<h1>A<br>B</h1>)` read the `<br>`'s (empty) textContent → `text: null`, which consumers surface as "not editable", and `setOwnText` wrote into the `<br>`, corrupting it (serialized as invalid `</br>`). Exclude void elements from the single-child text target; read `<br>` as "\n"; and rebuild the text/`<br>` run from the newline-separated value on write, reusing existing `<br>` nodes so their identity (data-hf-id) survives an in-place edit.