IssueTracker

Component used: Navigation
Version used: 2.8.3
Devices/Android versions reproduced on: Samsung S20, Samsung S21

Issue. If app is in background and deeplink is launched from other application:
- on "my_app://" deeplink, existing instance of the app is launched(which is what I expect)
- on "my_app://open_first_screen" deeplink, new activity is created, first screen opened, then previous Activity destroyed.
I need retain same MainActivity instance in both cases.

Project setup:
I have single Activity project with bottom bar navigation. Activity launchMode="singleTask", everything is setup by instructions using official docs. Manifest file looks like this:

<application>
...
<activity
            android:name=".mainActivity.MainActivity"
            android:windowSoftInputMode="adjustResize"
            android:launchMode="singleTask"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.VIEW" />

                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />

                <data android:scheme="my_app" />
            </intent-filter>
</activity>
...
<application />

MainActivity navigation part looks like this:

@AndroidEntryPoint
class MainActivity : ComponentActivity() {
...
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        ...
        setContent {
            ...
            val navController = rememberNavController()
            DisposableEffect(Unit) {
                val listener = Consumer<Intent> {
                    navController.handleDeepLink(it)
                }
                this@MainActivity.addOnNewIntentListener(listener)
                onDispose { this@MainActivity.removeOnNewIntentListener(listener) }
            }
            LaunchedEffect(Unit) {
                navController.addOnDestinationChangedListener{...}
            }

            MainScreen(...)
        }
    }
...
}

MainScreen navigation part:

@Composable
MainScreen(
    navController: NavHostController,
    ...
) {
    Scaffold(...) {
        NavHost(navController = navController, ...) {
            firstGraph()
            secondGraph()
        }
    }
}
private fun NavGraphBuilder.firstGraph() {
    navigation<Graph.FIrstGraph>(startDestination = Route.FirstScreen) {
        firstScreen()
        secondScreen()
    }
}
private fun NavGraphBuilder.secondGraph() {
    navigation<Graph.SecondGraph>(startDestination = Route.ThirdScreen) {
        thirdScreen()
        fourthScreen()
    }
}

The screen which accepts deeplink looks like this:

private fun NavGraphBuilder.firstScreen(navController: NavController, ...) {
    composable<Route.FirstScreen>(
        deepLinks = listOf(
            navDeepLink { uriPattern = "my_app://open_first_screen" }
        )
    ) {...}
}

Could anybody have a look? (issue described in the beginning)