How to show/hide bottom navigation in Compose?

Question

I have a code which calculates if bottom navigation bar should be visible, but once I got to specific screen the navigation resets to first home tab. I guess recomoposition occurs for whole Scaffold, but can't see why. I'm using new type safe compose navigation if that matters.

Here is a relevant code:

@Composable
fun HomeNav() {
    val navController = rememberNavController()

    var shouldShowBottomBar by rememberSaveable {
        mutableStateOf(true)
    }

    var selectedItemIndex by rememberSaveable {
        mutableIntStateOf(0)
    }

    LaunchedEffect(key1 = navController) {
        navController.addOnDestinationChangedListener { _, destination, _ ->
            shouldShowBottomBar = !destination.hasRoute(Details::class)

            if (destination.hasRoute(Home::class)) {
                selectedItemIndex = 0
            }
        }
    }

    Scaffold(
        bottomBar = {
            AnimatedVisibility(visible = shouldShowBottomBar) {
                NavigationBar {
                    bottomNavItems.forEachIndexed { index, item ->
                        NavigationBarItem(
                            selected = selectedItemIndex == index,
                            onClick = {
                                selectedItemIndex = index
                                navController.navigate(item.destination) {
                                    popUpTo(Home) {
                                        saveState = true
                                    }
                                    launchSingleTop = true
                                    restoreState = true
                                }
                            },
                            ...
                        )
                    }
                }
            }
        }
    ) { innerPadding ->
        NavHost(
            modifier = Modifier.padding(innerPadding),
            navController = navController,
            startDestination = HomeGraph
        ) {
            homeNavGraph(navController)
        }
    }
}