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.
<span prop="Outer step: 0" />
          <span prop="Inner text: A" />
          <span prop="Inner step: 0" />
        </>,
      );
      
      await ReactNoop.act(async () => {
        setText('B');
      });
      expect(Scheduler).toHaveYielded([
        'Outer text: B',
        'Outer step: 0',
        'Suspend! [Inner text: B]',
        'Inner step: 0',
        'Loading...',
      ]);
      
      await advanceTimers(250);
      expect(root).toMatchRenderedOutput(
        <>
          <span prop="Outer text: B" />
          <span prop="Outer step: 0" />
          <span hidden={true} prop="Inner text: A" />
          <span hidden={true} prop="Inner step: 0" />
          <span prop="Loading..." />
        </>,
      );
      
      await ReactNoop.act(async () => {
        ReactNoop.discreteUpdates(() => {