IsInclusiveDescendantOf calls can be rather slow
Bug 1816242 Comment 0 Edit History
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IsInclusiveDescendantOf calls can be rather slow, and it seems some js/html based code editors remove often nodes which are something like <div>text</div>.
IsInclusiveDescendantOf calls can be rather slow, and it seems some js/html based code editors remove often nodes which are something like <div>text</div>. And mRoot shouldn't be updated to the same value it already has.