textAlign not work

Is this a bug report?

yes

Have you read the Contributing Guidelines?

yes

Environment

Environment: OS: macOS High Sierra 10.13.6 Node: 8.3.0 Yarn: 1.12.3 npm: 5.3.0 Watchman: 4.9.0 Xcode: Xcode 10.1 Build version 10B61 Android Studio: Not Found

Packages: (wanted => installed) react: 16.2.0 => 16.2.0 react-native: Not Found

Target Platform: macos

Steps to Reproduce

code like this

render () {
    return (
        <Text
            style={{marginTop:20,backgroundColor:"red",textAlign:"right"}}>
            {'hello~~'}
        </Text>
    )
}