title: fab.show() not animated first time after initializing new activity
body: <p>I am using the floating action button (fab) component from com.android.support:design:23.1.0 Library to generate my app's fabs. </p>
  
  <p>But the first time I load a new activity with fab.hide() and try to make the icon visible through fab.show() after a button was clicked, there is no animation for the fab. This happens only the first time after loading a new activity. When I try that multiple times to hide and show the button, it is animated properly. </p>
  
  <p>What is the issue here? It would be a charm to get it animated also right after an activity is loaded.</p>
  
  <p>Java in activity:</p>
  
  <pre><code>    fabSend = (FloatingActionButton) findViewById(R.id.fabSend);
      fabSend.hide();    
  
  
  CompoundButton.OnCheckedChangeListener changeChecker = new CompoundButton.OnCheckedChangeListener() {
  
      @Override
      public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
          if (isChecked){
  //                FAB on
                  fabSend.show();
              }   else {
  //                FAB off
                  fabSend.hide();
              }
          }
      };
  </code></pre>
  
  <p>Layout.xml</p>
  
  <pre><code>            &lt;android.support.design.widget.FloatingActionButton
                  android:id="@+id/fabSend"
                  app:borderWidth="0dp"
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_gravity="end"
                  android:layout_alignParentBottom="true"
                  android:layout_marginRight="@dimen/fab_margin"
                  android:layout_marginBottom="54dp"
                  android:src="@drawable/ic_check_white_24dp" /&gt;
  </code></pre>