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The Ref That Vanished

A legacy UI library reads a ref directly off a React element inside its internals, not through props.

REACT_MODULE // 0x42

// Inside a third-party library's internals (not your code):
function LegacyWrapper(props) {
  const element = props.children;
  const forwardedRef = element.ref; // reads ref directly off the element
  attachToDialog(forwardedRef);
  return element;
}

Under React 19 this throws "Accessing element.ref was removed in React 19." What changed?

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