title: Strange issue when changing toolbar programmatically
body: <p>I'm having some troubles when i try to change <strong>ToolBar</strong> programmatically.</p>
  
  <p>When i change <strong>ToolBar</strong> title from code, and when i run program on real device my toolbar title is "MyAppName @2131558664", but i set only "MyAppName"</p>
  
  <p>Also i have <strong>ViewPager</strong> with fragments, in one of the fragments i getting toolbar and change toolbar menu(Add <strong>SearchView</strong> ), when i also start program and open <strong>SearchView</strong> my query also contains this "@2131558664". Why it happens? How can i fix it? 
  Thank for responces</p>
  
  <p><strong>Toolbar.xml:</strong></p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto"
      android:layout_width="match_parent"
      android:layout_height="?android:actionBarSize"
      app:theme="@style/MyToolBar"
      android:layout_centerHorizontal="true"
      app:popupTheme="@style/ThemeOverlay.AppCompat.Dark"&gt;
      &lt;/android.support.v7.widget.Toolbar&gt;
  </code></pre>
  
  <p><strong>MyToolBar theme:</strong></p>
  
  <pre><code>&lt;style name="MyToolBar" parent="Theme.AppCompat.Light"&gt;
          &lt;item name="android:text"&gt;@style/TextAppearance.Widget.Event.Toolbar.Title&lt;/item&gt;
          &lt;item name="android:windowActionBarOverlay"&gt;true&lt;/item&gt;
          &lt;!-- Support library compatibility --&gt;
          &lt;item name="windowActionBarOverlay"&gt;true&lt;/item&gt;
          &lt;item name="android:textColorPrimary"&gt;@color/colorAccent&lt;/item&gt;
          &lt;item name="android:textColorSecondary"&gt;@color/colorAccent&lt;/item&gt;
  
      &lt;/style&gt;
  </code></pre>
  
  <p>Snippet where i change <strong>ToolBar:</strong> </p>
  
  <pre><code>        Toolbar toolbar = (Toolbar) findViewById(R.id.app_bar);
          setSupportActionBar(toolbar);
          getSupportActionBar().setDisplayShowHomeEnabled(true);
          getSupportActionBar().setTitle("MyAppName");
  </code></pre>