react-native-webview ONLY starts loading when on active tab in react-navigation tabNavigator

I'm using a bottomTabNavigator with lazy set to false. For the screen I render a react-native-webview. The render function is being called because I can see the console.log but the actual webview does not start loading till the tab becomes active. The tab I start on starts loading immediately.

Tab

const Tab = () => { 
    console.log('render') // this is being called right away

    return (<WebView 
             onLoadStart={() => console.log('on load start') // this is being called only when tab becomes active (clicking on it) }
             source= />) 
}

Navigator

  const TabNavigator = createBottomTabNavigator(
  {
    TabOne: {
      screen: Tab
    },
    TabTwo: {
      screen: Tab
    }
  },
  {
    initialRouteName: 'TabOne',
    lazy: false,
  }
)

This happened after upgrading react-navigation from 1.x to 3.x and upgrading react-native and react-native-webview. I want the webview to start loading immediately, not just when visible.

from react-native-webview ONLY starts loading when on active tab in react-navigation tabNavigator