Sandbox: https://codesandbox.io/s/cranky-kapitsa-op3jh

Repro: type "a" and then after a second "b"

Expected: Eventually you'll see "ab" in all fields. Pending "..." indicator goes away.

Actual: You'll keep seeing "a" in low pri field. Pending "..." indicator is stuck.
const children = ReactNoop.getChildren();
          if (children === null) {
            return null;
          }
          return children[0].prop;
        }
        function Counter(props) {