title: Chrome page action popup disappears
body: <p>I need a page action popup icon to appear when a tab has a specific URL in the address bar.</p>
  
  <p>I have this in my background page</p>
  
  <pre><code>chrome.tabs.query({url:"MYURL.COM"} , function(tab)
              {
                  for(i=0;i&lt;tab.length;i++)
                  {
                      console.log(tab[i].id);
                      chrome.pageAction.show(tab[i].id);
                  }
  
              });
  </code></pre>
  
  <p>The popup shows whenever I reload the extension but as soon as user refreshes, it goes away and doesn't come back.</p>