Black color instead of white in transparent color

[wh120]

When I set backgroundColor of Scaffold to transparent it is show a black screen
This happened after upgrading easy_localization to v 3.0.0

 return Scaffold(
      appBar: AppBar(),
      backgroundColor: Colors.transparent,
      
      
      body: _body(),
    );
  }

[Overman775]

dublicate #380