Questions regarding the the effect and signal lifecycle

[SPiercer]

I have a couple of questions here regarding the lifecycle of the signal

1. Watch's effect gets called one time without updating the signal value, why ?

my lame answer is because when it's renders the initial value of the signal on widget mount

2. I've added auto dispose on the signal and i push and replace the current widget with another and the devtools shows that the signal is still alive but the effect has been removed. is this the right behavior ?

3. A follow up on point 2,
   Main page => counterSignal and updates it and then push replacement to Page2
   <counterEffect got disposed>
   Page2 => Push MainPage
   error! read signal after being disposed? can't update signal because it's disposed?
   question is why the signal cannot be re-instantiated and recreate itself because i pushed this page?

[SPiercer]

A follow up after some experimenting i started to use LiteRef instead of just having global signals

final counterRef = Ref.scoped(
  (_) => signal(
    0,
    debugLabel: 'counter',
  ),
  dispose: (signal) => signal.dispose(),
  autoDispose: true,
);

simple stuff you know..

so when autoDispose is true the signal gets disposed however it's still glitched in the devtools or idk if that's a bug.
and when i go to a new MainPage a new signal gets created and new effect and everything works as expected but there's double signals in the devtools

but a new problem just appeared

why does using untracked creates a signal instance and subscribes to it while it actually shouldn't do anything if the signal isn't created?
@rodydavis is this an issue ?