title: Theme.AppCompat.Light.NoActionBar.FullScreen Not Working with Android 4.4
body: <p>I am trying to build a fullscreen app and when I run it in a Acer Iconia 8, The title don't show up but the action buttons still appear:</p>
  
  <p>AndroidManifest.xml</p>
  
  <pre><code>&lt;application
      android:allowBackup="true"
      android:icon="@mipmap/ic_launcher"
      android:label="@string/app_name"
      android:theme="@style/Theme.AppCompat.Light.NoActionBar.FullScreen"&gt;
      &lt;activity
          android:name=".MainActivity"
          android:windowSoftInputMode="adjustResize"
          android:configChanges="orientation|keyboardHidden"&gt;
  
          &lt;intent-filter&gt;
              &lt;action android:name="android.intent.action.MAIN" /&gt;
              &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
          &lt;/intent-filter&gt;
      &lt;/activity&gt;
  &lt;/application&gt;
  
  &lt;uses-permission android:name="android.permission.INTERNET" /&gt;
  </code></pre>
  
  <p>And Styles:</p>
  
  <pre><code>&lt;resources&gt;
  
      &lt;!-- Base application theme. --&gt;
      &lt;style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar"&gt;
          &lt;!-- Customize your theme here. --&gt;
      &lt;/style&gt;
  
      &lt;style name="Theme.AppCompat.Light.NoActionBar.FullScreen" parent="@style/Theme.AppCompat.Light"&gt;
         &lt;item name="windowNoTitle"&gt;true&lt;/item&gt;
          &lt;item name="windowActionBar"&gt;false&lt;/item&gt;
          &lt;item name="android:windowFullscreen"&gt;true&lt;/item&gt;
          &lt;item name="android:windowContentOverlay"&gt;@null&lt;/item&gt;
      &lt;/style&gt;
  
  &lt;/resources&gt;
  </code></pre>
  
  <p>EDIT: </p>
  
  <p>Main Activity Class:</p>
  
  <pre><code>public class MainActivity extends AppCompatActivity {
  
      private Context context;
  
      private WebView webView;
      private LoginDialog dialog;
      private PinDialog pin;
      private RelativeLayout mainLayout;
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
  
          context = this;
  
          ClientCredentials.loadCredentials(context);
  
          mainLayout = (RelativeLayout)findViewById(R.id.mainLayout);
          Button loginButton = (Button)findViewById(R.id.loginButton);
          webView = (WebView)findViewById(R.id.webview);
          dialog = new LoginDialog(context);
          pin = new PinDialog(context, dialog);
  
          loginButton.setOnLongClickListener(new View.OnLongClickListener() {
              @Override
              public boolean onLongClick(View v) {
                  if(ClientCredentials.getClientId() &gt; 0 &amp;&amp; ClientCredentials.getToken().equals("")) {
                      dialog.show();
                  }
                  else {
                      pin.show();
                  }
  
                  return false;
              }
          });
  
          pin.setOnDismissListener(new DialogInterface.OnDismissListener() {
              @Override
              public void onDismiss(DialogInterface dialog) {
                  loadUrl();
              }
          });
  
          dialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
              @Override
              public void onDismiss(DialogInterface dialog) {
                  loadUrl();
              }
          });
  
          webView.setWebChromeClient(new WebChromeClient());
          WebSettings webSettings = webView.getSettings();
          webSettings.setJavaScriptEnabled(true);
  
          if(ClientCredentials.getClientId() &gt; 0 || !ClientCredentials.getToken().equals("")) {
              loadUrl();
          }
          else {
              dialog.show();
          }
      }
  
      private void loadUrl() {
          webView.loadUrl(String.format("http://XXX?Address_Id=%d&amp;Token=%s", ClientCredentials.getClientId(), ClientCredentials.getToken()));
      }
  }
  </code></pre>
  
  <p>I have added the class MainActivity code to complete the question.</p>