Can't refresh renderBackButton

[schlaegerz]

Version

Tell us which versions you are using:

• react-native-router-flux v4.0.0=beta.27
• react-native v0.54.2

Expected behaviour

Able to refresh backbutton/leftButton

Actual behaviour

Refresh does nothing, unless I pass in null

Steps to reproduce

For non-obvious bugs, please fork this component, modify Example project to reproduce your issue and include link here.

1. Load scene
2. On button press try Actions.resresh({renderBackButton: ()=>{return })
3. Still old back button

[rongmax-gufei]

PageA
componentWillReceiveProps () {
this.onRefresh()
}

PageB
Actions.pop({refresh: {}});

[aksonov]

Sorry, it is not supported. Instead define your logic inside renderBackButton function