title: When I use FlutterCachedEngine for start Activity, Flutter activity not running properly
body: <p>I want to start transparent <code>FlutterActivity</code> avoid <code>ExoPlayer</code> for Android.
  I must use <code>CachedEngine</code> for creating <code>Method channel</code> to same engine. In debug mode all fine, but in release or profile mode <code>FlutterUI</code> not showing all components.</p>
  <pre><code>public class MainActivity extends AppCompatActivity {
      public String STREAM_URL = &quot;https://bitdash-a.akamaihd.net/content/sintel/hls/playlist.m3u8&quot;;
      private String CHANNEL = &quot;channelId&quot;;
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          FlutterEngine flutterEngine = new FlutterEngine(this);
          flutterEngine.getDartExecutor().executeDartEntrypoint(
                  DartExecutor.DartEntrypoint.createDefault()
          );
  
          FlutterEngineCache
                  .getInstance()
                  .put(&quot;engineID&quot;, flutterEngine);
  
          new MethodChannel(flutterEngine.getDartExecutor().getBinaryMessenger(), CHANNEL)
                  .setMethodCallHandler(new MHandler(&quot;from min activity&quot;));
  
  
          setContentView(R.layout.activity_main);
          super.onCreate(savedInstanceState);
  
  
          startActivity(
                  PlatformActivity.
                          withCachedEngine(&quot;engineID&quot;)
                          .backgroundMode(FlutterActivityLaunchConfigs.BackgroundMode.transparent)
                          .build(this)
          );
      }
  }
  </code></pre>
  <p><a href="https://i.stack.imgur.com/R13wi.png" rel="nofollow noreferrer">Expected result</a></p>
  <p><a href="https://i.stack.imgur.com/aurHL.png" rel="nofollow noreferrer">Actual Result</a></p>