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.
return (
        <Suspense fallback={<Text text="Loading..." />}>
          {props.text === 'C' || props.text === 'S' ? (
            <Text text={props.text} />
          ) : (
            <AsyncText text={props.text} ms={10000} />
          )}
        </Suspense>
      );
    }
    
    
    ReactNoop.render(<App text="S" />);
    expect(Scheduler).toFlushAndYield(['S']);
    
    React.unstable_withSuspenseConfig(
      () => ReactNoop.render(<App text="A" />),
      {
        timeoutMs: 5000,
      },
    );
    
    expect(Scheduler).toFlushAndYield(['Suspend! [A]', 'Loading...']);
    expect(ReactNoop.getChildren()).toEqual([span('S')]);
    
    await advanceTimers(4999);