popTo can't find scene

[SexySix]

Version

• react-native-router-flux v4.0.0-beta.32 (v3 is not supported)
• react-native v0.52.3

Code

my code like following:

    <Router>
        <Modal hideNavBar>
          <Stack
            key="mainStack"
          >
            <Tabs
              key="tab"
            >
              <Scene key="home"/>
            </Tabs>
            <Scene key="some"/>
          </Stack>
          <Stack key="loginStack">
            <Scene key="login"/>
            <Scene key="register"/>
          </Stack>
        </Modal>
      </Router>

Expected behaviour

When current scene is 'register', Actions.popTo('home') should back to 'home'

Actual behaviour

When current scene is 'register', Actions.popTo('home') doesn't work.
And In 4.0.0-beta.31, it works.

#3043 may cause this bug.

P.S.My English is poor. Sorry.

[aksonov]

Please check latest 4.0.0-beta.40, Example Login->Login2->login3->popToRoot uses popTo function