React-native-elements: onBackdropPress not work in Overlay

[dev4xy]

onBackdropPress not work for me.

        <Overlay
          isVisible={this.state.isVisible}
          onBackdropPress={() => this.setState({isVisible: false})}
        >
          <Text>Hello from Overlay!</Text>
        </Overlay>

  "dependencies": {
    "prop-types": "^15.6.1",
    "react": "16.3.1",
    "react-native": "0.55.4",
    "react-native-elements": "^1.0.0-beta5",
    "react-native-vector-icons": "^4.6.0",
    "react-navigation": "^2.0.1"
  },

[dev4xy]

##I Found problem!!!
this:

it not work.

<View style={styles.container}>
    <Overlay 
            onBackdropPress={() => this.setState({isVisible: false})}
             ...
    />

     <SomeViews .../>
     <SomeViews .../>
     ...
</View>

but it work fine:

<View style={styles.container}>

     <SomeViews .../>
     <SomeViews .../>
     ...

     <Overlay 
          onBackdropPress={() => this.setState({isVisible: false})}
             ...
     />

</View>

Overlay must in end of view ?! i think it's a bug!

if Overlay in above of views....
see problem:

@iRoachie @KevM @cpunion @caphun @cranberyxl @xdamman