Component used: Navigation
Version used: 2.2.0-rc03
Devices/Android versions reproduced on: can't reproduce

I have a few crash reports about this exceptions, that I can't reproduce in normal conditions and I wonder if this is some corner-case bug.

Stacktrace:
Fatal Exception: java.lang.IllegalStateException: unknown destination during deep link: com.app:id/nav_graph_main
at androidx.navigation.NavController.handleDeepLink(NavController.java:660)
at androidx.navigation.NavController.onGraphCreated(NavController.java:573)
at androidx.navigation.NavController.setGraph(NavController.java:534)
at androidx.navigation.NavController.setGraph(NavController.java:514)
at com.app.view.HomeFragment.prepareNestedNavHost(HomeFragment.java:65)
at com.app.view.HomeFragment.onViewCreated(HomeFragment.java:50)
at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:304)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1227)
at androidx.fragment.app.FragmentManager.addAddedFragments(FragmentManager.java:2373)
at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2108)
at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2064)
at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:1960)
at androidx.fragment.app.FragmentManager$4.run(FragmentManager.java:418)

I have a main NavHostFragment, hosted in my MainActivity, that owns the "nav_graph_main" graph.
HomeFragment is a destination of "nav_graph_main" and it contains a second NavHost (the "nested" NavHost) to manage navigation between several subscreens together with a BottomNavigationBar (HomeFragment's layout is a NavHostFragment above a BottomNavigatonBar).
The graph of the "nested" navigation ("nav_graph_home") is a separate resource, with no link to the outer "nav_graph_main" graph.
I need to programmatically set the nested graph to the nested NavController, because the start destination practically depends on which bottom navigation tab I want to be selected first.
Therefore, in HomeFragment's onViewCreated, I call the following prepareNestedNavHost:

fun prepareNestedNavHost() {
val startDestination = args.startDestination
val navHostFragment = childFragmentManager.findFragmentById(R.id.navHostHome) as? NavHostFragment
navHostFragment?.navController?.apply {
// I have no other way to know if the graph is not set:
kotlin.runCatching { this.graph }.onFailure {
val nestedGraph = navInflater.inflate(R.navigation.nav_graph_home)
graph.startDestination = startDestination
this.graph = nestedGraph
}
}
}

The only potential reason that came out of my mind is that the nested NavController, sharing the same Activity with the outer NavController, might end up handling an Intent directed to the latter. Is this working as intended?

Issue 147378752

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