Is this a bug report?

(Yes)

Have you read the Contributing Guidelines?

(Yes)

Environment

1. react-native -v:

react-native-cli: 2.0.1
react-native: 0.47.1

2. node -v:

v8.1.3

3. npm -v:

5.0.3

4. yarn --version:

0.27.5

Then, specify:

• Target Platform: Android

• Development Operating System: Windows10

• Build tools: react-native run-android

Steps to Reproduce

(Write your steps here:)

class App extends Component {
  componentDidMount() {
    BackHandler.addEventListener('hardwareBackPress', this.onBackPress);
  }
  componentWillUnmount() {
    BackHandler.removeEventListener('hardwareBackPress', this.onBackPress);
  }
  onBackPress = () => {
    return true;
  };
  render() {
    return (
      <Text>Press back buton</Text>
    );
  }
}

If you run the code in development environment , it don't works and when you press back button , app will be closed , but in development environment if you turn on remote debug , the code works well and app not closed

Expected Behavior

(Prevent closing app on back button pressed)

Actual Behavior

(On development environment when remote debug is off it don't woks but when remote debug is on it works)

Reproducible Demo

(N/A)