Flutter StreamBuilder continue to be updated after push another screen

I'm totally lost with Flutter Bloc and streams..
After a lot of debugging I figure out the BlocBuilder doesn't really work well with streams, emit happening but the widget doesn't updating probably it's not enough sensitive to small changes (in a list object fields..). So I have tried StreamBuilder that will listen to the stream of a list, that works fine even though it doesn't really feel comfortable - what really the bloc for if it doesn't update the widget on changes well?

Now the problem is after I push another page the StreamBuilder continued to be updated with data.. Is there anyway to pause it - seems like a big waist

If you want BlocBuilder to change based on a list update then you need to make a copy of the list and emit that.

// in bloc function...

final updatedList = [...state.myList]; // making a copy of the list using spread operator

// update your list
// emit updatedList and BlocBuilder will react

There's no reason to have to use StreamBuilders. Using a Bloc widget, once that page is off of the navigation stack, it won't react to any changes. If you push a new page to the stack without popping off the previous one, then any listeners will still be active.

You can use the buildWhen or listenWhen filters of the BlocBuilder and BlocListener widgets to check where you are in the navigation if you need the previous page to remain in the navigation stack.

BlocListener<YourBloc, YourState>(
      listenWhen: (previous, current) {
        // check if current page is the current page before reacting to state changes
      },
      listener: (context, state) {
         ...
        },
    );