SetOption(merge: true) not working

[mimib00]

When i try to add data to existing doc and the SetOption(merge: true) yet it overwrite the doc it doesn't merge it togather

Task task = Task(title: _taskTitle);
String id = "${_getFormatedDay(_taskDate!.day)}-${_taskDate!.day}".trim();
var taskId = db.collection('task').doc().id;
var data = {
taskId: task.toJson()
};
db.collection('tassker').doc(id).set(data, SetOptions(merge: true));

[khaven]

I've found the same problem.
@override Future<dynamic> set(Map<String, dynamic> data, [SetOptions? options]) async { options ??= SetOptions(); if (options.merge) { final output = Map<String, dynamic>.from(data); Map<String, dynamic>? input = _data[id] ?? {}; print(input); output.updateAll((key, value) { input![key] = value; }); _data[id] = input; } else { _data[id] = data; } _utils.set(_data[id], path); }

Input isn't loaded with old data. It's {} when i reloaded app. So it's not adding new data with old data and overwrites with just new data.