Actions.refresh renderRightButton has no effect

Version

Tell us which versions you are using:

• react-native-router-flux v4.0.1 (v3 is not supported)
• react-native v0.56.0

Expected behaviour

The navbar refreshes with the new right button component

Actual behaviour

No effect

Steps to reproduce

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

  static onEnter = () => {
    const { wrappedInstance } = Actions.refs.profile

    // this works
    Actions.refresh({
      rightTitle: "Logout",
      onRight: wrappedInstance.onLogout
    })

   // this has no effect
   Actions.refresh({
      renderRightButton: () => <MoreButton onPress={() => alert('hi')} />
   })
  }

[waqas19921]

For react-navigation version 3.X use following example May be it also works with 4.x

class Companies extends Component {

    componentDidMount(){
        Actions.refresh({
          right: () => (
              <MaterialIcons
                name={'mail'}
                size={48}
                color={'black'} />
          )
        })
     } 

    render(){
      ...
    }
}

[jamesholcomb]

Here is how I worked around it

        <Scene
          back
          key={routes.PROFILE}
          component={ProfileScene}
          renderRightButton={
            <MoreButton
              onPress={() => Actions.refs.profile.wrappedInstance.onMorePress()}
            />
          }
          title="Profile"
        />