Dart 3: Breakpoint Issue

main.dart

void main() {
  var data = {
    'number': 20,
    'canProcess': true,
  };
  final worker = Worker(data);
  print(worker.result);

  final result = worker.maybeProcess(data, (data) {
    if (data case {'number': final number}) {
      // Breakpoint 2: without issue
      return number % 2 == 0;
    }
    return null;
  });

  print(result);

  print(worker.getResult());
  print(dataHasEventNumber(data));
}

class Worker {
  final dynamic _data;

  Worker(this._data);

  bool? get result {
    return maybeProcess(_data, (data) {
      if (data case {'number': final number}) {
        // Breakpoint 1: with issue
        return number % 2 == 0;
      }
      return null;
    });
  }

  bool? getResult() {
    return maybeProcess(_data, (data) {
      if (data case {'number': final number}) {
        // Breakpoint 3: with issue
        return number % 2 == 0;
      }
      return null;
    });
  }

  bool? maybeProcess<String>(dynamic data, bool? Function(dynamic) fun) {
    if (data case {'canProcess': final value} when value == true) {
      return fun(data);
    }

    return null;
  }
}

bool? dataHasEventNumber(data) {
  if (data case {'number': final number}) {
    // Breakpoint 4: without issue
    return number % 2 == 0;
  }
  return null;
}