Markdium-React race condition bug

Markdium-JSX.jsx

function Pets() {
  //...
  const _previousKeyRef = useRef(null);

  useEffect(() => {
    _previousKeyRef.current = pets.selectedPet;
    if (pets.selectedPet) {
      dispatch({ type: "FETCH_PET" });
      getPet(pets.selectedPet).then(data => {
        if (_previousKeyRef.current === pets.selectedPet) {
          dispatch({ type: "FETCH_PET_SUCCESS", payload: data });
        }
      });
    } else {
      dispatch({ type: "RESET" });
    }
  }, [pets.selectedPet]);

  return (...);
}