title: Strange webview goBack issue in android
body: <p>I am using webview in Android. But strangely, sometimes even webview <code>canGoBack</code> method returns <code>true</code>, webview <code>goBack</code> method doesn't work.</p>
  
  <pre><code>if (webView.canGoBack()) 
      webView.goBack();
  </code></pre>
  
  <p>Thanks for any idea.</p>