Flutter - Container BoxShadow disappears on scroll in a ListView

Question

This is what my Container looks like:

new Container(
        width: 500.0,
        height: 250.0,
        padding: new EdgeInsets.fromLTRB(20.0, 40.0, 20.0, 40.0),
        decoration: new BoxDecoration(
          color: const Color(0xFF66BB6A),
          boxShadow: [new BoxShadow(
            color: Colors.black,
            blurRadius: 20.0,
          ),]
        ),
        child: new Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            new Container(
              padding: new EdgeInsets.fromLTRB(0.0, 0.0, 0.0, 10.0),
              child: new Text("Testtext", style: new TextStyle(fontSize: 30.0, fontFamily: "Barrio", color: new Color.fromARGB(255, 230, 230, 230))),
            ),
          ]
        ),
      ),

It is inside a ListView with some other Containers. As soon as I start scrolling through the ListView, the shadow just disappears. When loading the view tho, it appears correctly.

Any thoughts on this problem?

Thanks

Answer 1

This other answer is for those who need to continue with Container:

Container(
  decoration: BoxDecoration(
    shape: BoxShape.circle, // BoxShape.circle or BoxShape.retangle
    //color: const Color(0xFF66BB6A),
    boxShadow: [BoxShadow(
      color: Colors.grey,
      blurRadius: 5.0,
    ),]
  ),
  child: ...
),