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.
useLayoutEffect(() => {
          Scheduler.unstable_yieldValue(`Current: ${getCommittedText()}`);
        });
        return <Text text={props.count} />;
      }
      ReactNoop.render(<Counter count={0} />, () =>
        Scheduler.unstable_yieldValue('Sync effect'),
      );
      expect(Scheduler).toFlushAndYieldThrough([
        [0],
        'Current: 0',
        'Sync effect',
      ]);
      expect(ReactNoop.getChildren()).toEqual([span(0)]);
      ReactNoop.render(<Counter count={1} />, () =>
        Scheduler.unstable_yieldValue('Sync effect'),
      );
      expect(Scheduler).toFlushAndYieldThrough([
        [1],
        'Current: 1',
        'Sync effect',
      ]);
      expect(ReactNoop.getChildren()).toEqual([span(1)]);
    });
    it('force flushes passive effects before firing new layout effects', () => {
      let committedText = '(empty)';
      function Counter(props) {