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 [count, setCount] = useState(0);
        setCount(count + 1);
        Scheduler.unstable_yieldValue('Render: ' + count);
        return <Text text={count} />;
      }
      ReactNoop.render(<Counter />);
      expect(Scheduler).toFlushAndThrow(
        'Too many re-renders. React limits the number of renders to prevent ' +
          'an infinite loop.',
      );
    });
    it('works with useReducer', () => {
      function reducer(state, action) {