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.
ping = useDebouncedCallback(
          value => {
            Scheduler.unstable_yieldValue('ping: ' + value);
          },
          100,
          [],
        );
        return null;
      }
      act(() => {
        ReactNoop.render(<App />);
      });
      expect(Scheduler).toHaveYielded([]);
      ping(1);
      ping(2);
      ping(3);
      expect(Scheduler).toHaveYielded([]);
      jest.advanceTimersByTime(100);
      expect(Scheduler).toHaveYielded(['ping: 3']);
      ping(4);
      jest.advanceTimersByTime(20);
      ping(5);
      ping(6);
      jest.advanceTimersByTime(80);
      expect(Scheduler).toHaveYielded([]);
      jest.advanceTimersByTime(20);
      expect(Scheduler).toHaveYielded(['ping: 6']);
    });
    it('should return the same ref during re-renders', () => {
      function Counter() {