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, updateCount] = useState(0);
        updaters.push(updateCount);
        return <Text text={'Count: ' + count} />;
      }
      ReactNoop.render(<Counter />);
      expect(Scheduler).toFlushAndYield(['Count: 0']);
      expect(ReactNoop.getChildren()).toEqual([span('Count: 0')]);
      act(() => updaters[0](1));
      expect(Scheduler).toHaveYielded(['Count: 1']);
      expect(ReactNoop.getChildren()).toEqual([span('Count: 1')]);
      act(() => updaters[0](count => count + 10));
      expect(Scheduler).toHaveYielded(['Count: 11']);
      expect(ReactNoop.getChildren()).toEqual([span('Count: 11')]);
      expect(updaters).toEqual([updaters[0], updaters[0], updaters[0]]);
    });
    it('warns on set after unmount', () => {
      let _updateCount;
      function Counter(props, ref) {