android navbar position wrong with navTransparent

[simonwang6666]

Version

• react-native-router-flux v4.0.3
• react v16.5.1
• react-native v0.57.1

Expected behaviour

The nav contents stay at the middle of the view in Android which was normal @4.0.0-beta.31

Actual behaviour

stay at the bottom

Steps to reproduce

my code:

<Scene
     {...configs}
     component={CommonView(component)}
     navTransparent
/>

common view is a HOC to hack a customized navbar like

({navbarStyle, fullScreen = false, barStyle, ...compProps}) => (
        <View style={{flex: 1}}>
            <StatusBar barStyle={barStyle}/>
            {!fullScreen && <View style={[styles.narbarWrapper, navbarStyle]}/>}
            <Component {...compProps}/>
        </View>
);

'View' is the actual area to contain the backButton and title with some customized style.The position of the nav contents went wrong even if simply use navTransparent.

[daviscabral]

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