react-native-router-flux: Actions.pop(refresh:{}) does not work for me

Version

• react-native-router-flux v4
• react-native v0.55.4
• react v16.3.1

Expected behaviour

I have screen A and Screen B when I redirect from A -> B, In B screen backing to A , I want A screen fetch data and rerender the screen everytime entering it

Actions.pop({
     refresh: {someProp: Math.random()}
})

Actual behaviour

The api methions above does not work , so I did some workaround,

Actions.pop()
setTimeout(() => {
      Actions.refresh({
        someprop: Math.random() * 100
      })
}, 10)

this can fire componentWillReceiveProps lifecycle method in A screen and I setState and rerender screen A in this way

I want to know why Actions.pop({refresh: {}}) does nothing in my case It can not even fire componentWillReceiveProps unless move it in a setTimeout function