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 [, updateCount] = useState(0);
        _updateCountB = updateCount;
        return null;
      }
      ReactNoop.render([<CounterA key="A" />, <CounterB key="B" />]);
      expect(Scheduler).toFlushWithoutYielding();
      ReactNoop.render(null);
      expect(Scheduler).toFlushWithoutYielding();
      expect(() => act(() => _updateCountA(1))).toErrorDev(
        "Warning: Can't perform a React state update on an unmounted " +
          'component. This is a no-op, but it indicates a memory leak in your ' +
          'application. To fix, cancel all subscriptions and asynchronous ' +
          'tasks in a useEffect cleanup function.\n' +
          '    in CounterA (at **)',
      );
      
      act(() => _updateCountA(2));
      expect(() => act(() => _updateCountB(1))).toErrorDev(
        "Warning: Can't perform a React state update on an unmounted " +
          'component. This is a no-op, but it indicates a memory leak in your ' +
          'application. To fix, cancel all subscriptions and asynchronous ' +
          'tasks in a useEffect cleanup function.\n' +
          '    in CounterB (at **)',
      );
    });
    it('works with memo', () => {
      let _updateCount;
      function Counter(props) {