State change in useEffect doesn't trigger rebuild

[zaikir]

Describe the bug
First of all, great library! But I faced strange issue and can't understand -- or this is a bug, or I just missed something. The problem is related to how useEffect works -- it seems like it doesn't trigger rebuild when state inside it changes.
In my example, I do input.value += '1' by pressing a button and I see 5 printed lines. But technically it should be 6, right?
Because in useEffect we change the state and it should retrigger build (otherwise useMemoized not updating)

Did I miss something? Because in React.js this example would work

To Reproduce

final input = useState('');
final confirm = useState('');

print('input: $input.value, confirm: $confirm.value');

final subtitleText = useMemoized(() {
  return confirm.value.isEmpty ? 'Create New Passocde' : 'Confirm Passcode';
}, [confirm.value]);

useEffect(() {
  if (input.value.length == 4) {
    confirm.value = input.value;
  }

  return null;
}, [input.value]);

Expected behavior
I see 5 lines of printed text but it should be 6:

flutter: input: ValueNotifier<String>#87874().value, confirm: ValueNotifier<String>#8edb3().value
flutter: input: ValueNotifier<String>#87874(1).value, confirm: ValueNotifier<String>#8edb3().value
flutter: input: ValueNotifier<String>#87874(11).value, confirm: ValueNotifier<String>#8edb3().value
flutter: input: ValueNotifier<String>#87874(111).value, confirm: ValueNotifier<String>#8edb3().value
flutter: input: ValueNotifier<String>#87874(1111).value, confirm: ValueNotifier<String>#8edb3().value

[rrousselGit]

That's expected. The callback executes synchronously.

That's like doing:

build(context) {
  setState(() {});
}

This won't rebuild the widget