RCTView has a shadow set but cannot calculate shadow efficiently

Version

• react-native-router-flux v3.2.6
• react-native v0.23.0-rc3

Expected behaviour

Load my scenes without warning

Actual behaviour

Everything works, but I have this react-native yellow warning

View #8 of type RCTView has a shadow set but cannot calculate shadow efficiently. Consider setting a background color to fix this, or apply the shadow to a more specific component.

Steps to reproduce

This is my router configuration

export default class App extends Component {
  render () {
    return (
      <Router createReducer={reducerCreate}>
        <Scene key='root'>
          <Scene key='home' component={Home} title='Home' />
        </Scene>
      </Router>
    )
  }
}

If I remove the router and I render the Home component directly, I don’t have the warning message anymore.
Do you have any clues about which component is the error referring?