SliverFillRemaining with hasScrollBody: false "hides" child behind scrollable #35758

import 'package:flutter/material.dart';

class HomeScreen extends StatefulWidget {
  @override
  _HomeScreenState createState() => _HomeScreenState();
}

class _HomeScreenState extends State<HomeScreen> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Repro'),
      ),
      body: CustomScrollView(
        slivers: <Widget>[
          SliverFixedExtentList(
            itemExtent: 150.0,
            delegate: SliverChildBuilderDelegate(
              (BuildContext context, int index) {
                return Container(
                  color: index % 2 == 0 ? Colors.red : Colors.green,
                );
              },
              childCount: 30, 
            ),
          ),
          SliverFillRemaining(
            hasScrollBody: false,
            child: Align(
              alignment: Alignment.bottomCenter,
              child: RaisedButton(
                color: Colors.blue,
                textColor: Colors.white,
                child: Text('Go to settings'),
                onPressed: () {
                  print('Hello');
                },
              ),
            ),
          )
        ],
      ),
    );
  }
}