Dart-Code: Unverified breakpoints in specific file

I have a Flutter project and have been debuging it for a while now using VSCode. I just found recently that, in a specific file, all my breakpoints are marked “Unverified” when I start debugging my project from VSCode.

My file is imported same as all the others, nothing special. I have a core class which instantiates my managers, like so:

import 'package:bloc/bloc.dart';
import 'package:meta/meta.dart';

import 'package:live_app/managers/chat/chat_manager.dart';
import 'package:live_app/managers/user/user_manager.dart';

class BaseCore extends Bloc<CoreBaseEvent, CoreBaseState> {
  UserManager _userManager;
  IUserManager get userManager => _userManager;

  ChatManager _chatManager;
  IChatManager get chatManager => _chatManager;

  BaseCore() {
    _userManager = UserManager(_hubConnection);
    _chatManager = ChatManager(_hubConnection, EHubPacketType.VROOMCHAT, _userManager);
  }

  // ...

I can place a breakpoint in my UserManager and it works, while placing one in my ChatManager doesn’t. Any idea?

I’m using VSCode 1.41.1 on Windows 10, with Dart-Code extension 3.7.1.