Dart http:1.2.2 can not access Android System WiFi proxy

[nuxwork]

dart http:1.2.2 access faild on android, no exception, nothing happend. access ok on macos
okhttp:0.1.0 for android access ok
cupertino_http:1.5.1 for ios access ok
url: https://eu-trailcamera-media.s3.eu-central-1.amazonaws.com/0000-TEST/thumb11188.jpeg

import 'dart:io';
import 'package:http/http.dart' as darthttp;

Future<void> main() async {
  var resp = await darthttp.get(Uri.parse(
      'https://eu-trailcamera-media.s3.eu-central-1.amazonaws.com/0000-TEST/thumb11188.jpeg'));
  print('${resp.body}');
}

[nuxwork]

This is pcap of dart http and okhttp, 192.168.5.201 is my proxy address, it looks like okhttp acces by proxy 192.168.5.201, but dart http do not access by proxy

pcap.zip

[nuxwork]

This is android wifi proxy settings

This is dart http tcp pcap

This is android okhttp tcp pcap