I made a **[DEMO](https://rnplay.org/plays/iBVgwg)** 

so the problem is that third button isn't working. The only difference between buttons is the way I passed them in Header component.

```
<Header secondButton={<View style={styles.button}><Text>Second Button</Text></View>}
        thirdButton={<ThirdButton />}
        onPress={this._handlePress} />

```