Component used: Navigation-Compose Version used: 1.0.0-alpha10, Compose 1.0.0-beta05

A bit short on time, so just posting a simple repro here. When trying to navigate to a destination that is the current destination but with different arguments using NavOptions.launchSingleTop, the NavController will replace the current NavBackStackEntry's arguments. Consider the following example:

@Composable
fun App() {
    val navController = rememberNavController()
    NavHost(
        navController = navController,
        startDestination = "home?arg={arg}"
    ) {
        composable(route = "home?arg={arg}") { backStackEntry ->
            val arg = backStackEntry.arguments?.getString("arg") ?: "Empty"
            Column {
                Text("Argument: $arg")
                Button(
                    onClick = {
                        navController.navigate("home?arg=value2") {
                            launchSingleTop = true
                        }
                    }
                ) {
                    Text("Click to navigate!")
                }
            }
        }
    }
}

In NavController#currentBackStackEntryAsState, the State's value won't be changed because the reference stays the same and the NavBackStackEntry held by the state has already been mutated, so the NavHost won't recompose after that change. Maybe the NeverEqualPolicy could be used as a quick fix.

Let me know if you need more info, cheers!