title: Firestore "startAt" keeps bringing the same data
body: <p>I am doing a <strong>pagination</strong> with firestore, the problem is that even if I change the <strong>startAt</strong> it still brings the same results.</p>
  <p><strong>An example of my problem</strong></p>
  <pre><code>const snaps = await db.collection('blogs').
                .orderBy('createdAt')
                .startAt(0)
                .limit(5).get();
  
  const snaps2 = await db.collection('blogs').
                .orderBy('createdAt')
                .startAt(5)
                .limit(5).get();
  let billList = [] 
  let billList2 = []
  
  snaps.forEach(x =&gt; billList.push(x.data()) ) 
  snaps2.forEach(x =&gt; billList.push(x.data()) ) 
  
  console.log(billList)
  console.log(billList2)
  
  </code></pre>
  <p><a href="https://i.stack.imgur.com/V30dn.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/V30dn.png" alt="enter image description here" /></a></p>
  <p><a href="https://i.stack.imgur.com/mMcO0.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/mMcO0.png" alt="enter image description here" /></a></p>