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(Scheduler).toFlushAndYieldThrough(['Commit']);
    expect(ReactNoop).toMatchRenderedOutput(<div hidden={true} />);
    
    React.unstable_withSuspenseConfig(
      () => {
        ReactNoop.render(<App showContent={true} />);
      },
      {timeoutMs: 2000},
    );
    expect(Scheduler).toFlushAndYield(['Suspend! [A]', 'Loading...']);
    Scheduler.unstable_advanceTime(2000);
    await advanceTimers(2000);
    expect(Scheduler).toHaveYielded(['Promise resolved [A]']);
    expect(Scheduler).toFlushAndYieldThrough(['A', 'Commit']);
    expect(ReactNoop).toMatchRenderedOutput(
      <>
        <div hidden={true} />
        <span prop="A" />
      </>,
    );
    expect(Scheduler).toFlushAndYield(['Offscreen']);
    expect(ReactNoop).toMatchRenderedOutput(
      <>
        <div hidden={true}>Offscreen</div>
        <span prop="A" />
      </>,
    );
  });
  it('should be able to unblock higher pri content before suspended hidden', async () => {
    function Offscreen() {