title: fill in input empty but still have texts
body: <p>I am using puppeteer to <strong>scrape</strong> a page, there is a simple form for searching on the page
  I enter a search text in one input, the others are empty, however, when i click on the search, the others input are not empty, what' s wrong with it ?</p>
  <pre><code>await page.goto('http://www.dollmedia-btp.com/annuaire/',  {waitUntil: 'domcontentloaded'});
  
  await page.type(&quot;input#input-recherche-activite&quot;, &quot;Maçonnerie&quot;);
  await page.type(&quot;input#input-recherche-raison-sociale&quot;, &quot;&quot;);
  await page.type(&quot;input#input-recherche-ville&quot;,&quot;&quot;);
  await page.type(&quot;input#input-recherche-tel&quot;, &quot;&quot;);
  </code></pre>
  <p>I don' t know what to do, thanks for your helps</p>