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.
ReactNoop.render(
            <>
              <Counter label="B" count={2} />
              <Counter label="C" count={0} />
            </>,
            () => Scheduler.unstable_yieldValue('Sync effect'),
          );
          expect(Scheduler).toFlushAndYieldThrough([
            'B 2',
            'C 0',
            'Sync effect',
          ]);
          expect(ReactNoop.getChildren()).toEqual([span('B 2'), span('C 0')]);
        });
        expect(Scheduler).toHaveYielded([
          'Unmount A [1]',
          'Unmount B [1]',
          'Mount B [2]',
          'Mount C [0]',
        ]);
      });
    }
    it('handles errors in create on mount', () => {
      function Counter(props) {
        useEffect(() => {
          Scheduler.unstable_yieldValue(`Mount A [${props.count}]`);
          return () => {
            Scheduler.unstable_yieldValue(`Unmount A [${props.count}]`);
          };
        });