title: Collapsing toolbar layout status bar issue
body: <p>i don't know why, but seems that when the toolbar collapse, appears a second status bar.</p>
  
  <p>I used <code>android:fitsSystemWindows="true"</code> in all components, because without this the toolbar came out from the status bar.</p>
  
  <p>Here are some images to better explain:
  <a href="https://drive.google.com/open?id=0B3eyDGRs7OssQzVvVktXNVJTY0U">Images</a>
  <br /><br />
  I have never seen such a thing, and I tried them all but I do not know how to solve it.
  I could not find anything on the net.</p>
  
  <p><br />
  Here the code:</p>
  
  <p>Layout:
      
      
          </p>
  
  <pre><code>&lt;android.support.design.widget.CollapsingToolbarLayout
      android:id="@+id/collapsing_toolbar"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:fitsSystemWindows="true"
      app:statusBarScrim="?attr/colorPrimaryDark"
      app:contentScrim="?attr/colorPrimary"
      app:layout_scrollFlags="scroll|exitUntilCollapsed" &gt;
  
      &lt;ImageView
          android:id="@+id/photo_actor"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:scaleType="centerCrop"
          android:fitsSystemWindows="true"
          app:layout_collapseMode="parallax" /&gt;
      &lt;View
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          app:layout_collapseMode="parallax"
          android:fitsSystemWindows="true"
          android:background="@drawable/background_protection" /&gt;
      &lt;android.support.v7.widget.Toolbar
          android:id="@+id/toolbar"
          android:fitsSystemWindows="true"
          android:layout_width="match_parent"
          android:layout_height="?attr/actionBarSize"
          app:layout_collapseMode="pin" /&gt;
  &lt;/android.support.design.widget.CollapsingToolbarLayout&gt;
  &lt;/android.support.design.widget.AppBarLayout&gt;
  &lt;android.support.v4.widget.NestedScrollView
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      app:layout_behavior="@string/appbar_scrolling_view_behavior"&gt;
      &lt;LinearLayout
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:padding="8dp"
          android:orientation="vertical"&gt;
          &lt;WebView
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:background="@null"
              android:id="@+id/webview_bio"/&gt;
      &lt;/LinearLayout&gt;
      &lt;/android.support.v4.widget.NestedScrollView&gt;
  </code></pre>
  
  <p></p>
  
  <p>Activity onCreate:</p>
  
  <pre><code>Toolbar toolbar = (Toolbar)findViewById(R.id.toolbar);
      setSupportActionBar(toolbar);
  
      CollapsingToolbarLayout collapsingToolbarLayout = (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar);
      if(collapsingToolbarLayout!=null){
          collapsingToolbarLayout.setTitle(advm.getName());
      }
  </code></pre>
  
  <p>Styles: (the one I use in the current Activity is the second)</p>
  
  <pre><code>&lt;style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar"&gt;
      &lt;item name="colorPrimary"&gt;@color/colorPrimary&lt;/item&gt;
      &lt;item name="colorPrimaryDark"&gt;@color/colorPrimaryDark&lt;/item&gt;
      &lt;item name="colorAccent"&gt;@color/colorAccent&lt;/item&gt;
      &lt;item name="android:textColor"&gt;@color/text_color&lt;/item&gt;
  &lt;/style&gt;
  
  &lt;style name="AppTheme.NoActionBar"&gt;
      &lt;item name="android:windowDrawsSystemBarBackgrounds"&gt;true&lt;/item&gt;
      &lt;item name="android:windowTranslucentNavigation"&gt;true&lt;/item&gt;
      &lt;item name="android:statusBarColor"&gt;@android:color/transparent&lt;/item&gt;
      &lt;item name="windowActionBar"&gt;false&lt;/item&gt;
      &lt;item name="windowNoTitle"&gt;true&lt;/item&gt;
  &lt;/style&gt;
  </code></pre>