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.
expect(ReactNoop.getChildren()).toEqual([]);
    
    Scheduler.unstable_advanceTime(100);
    await advanceTimers(100);
    expect(Scheduler).toHaveYielded(['Promise resolved [A]']);
    
    
    expect(Scheduler).toFlushAndYield(['D']);
    expect(ReactNoop.getChildren()).toEqual([
      span('Loading...'),
      span('C'),
      span('D'),
    ]);
    
    await null;
    
    expect(Scheduler).toFlushAndYield(['Bar', 'A', 'B']);
    expect(ReactNoop.getChildren()).toEqual([
      span('A'),
      span('B'),
      span('C'),
      span('D'),
    ]);
  });
  it('suspends rendering and continues later', async () => {
    function Bar(props) {
      Scheduler.unstable_yieldValue('Bar');
      return props.children;
    }
    function Foo({renderBar}) {