architecture-components-samples: Navigation component app:clearTask and app:launchSingleTop crash

Component used: Navigation Version used: alpha01, alpha02 Devices/Android versions reproduced on: All

App crash when using app:clearTask=“true” or app:launchSingleTop=“true” in nav_graph.xml

Some times crash is gone after second app start. Some times it crashes on second call to this action (for example I opened fragment with app:launchSingleTop=“true” then go back using findNavController().navigateUp() and opened it again -> crash)

java.lang.IllegalArgumentException: navigation destination indicaonline.delivery:id/action_mainFragment_to_orderDetailsFragment is unknown to this NavController
        at androidx.navigation.NavController.navigate(NavController.java:633)
        at androidx.navigation.NavController.navigate(NavController.java:592)
        at androidx.navigation.NavController.navigate(NavController.java:654)
        at package.ui.main.MainFragment.openOrderDetails(MainFragment.kt:215)
        at package.ui.main.MainFragment.onItemClick(MainFragment.kt:203)
        at eu.davidea.viewholders.FlexibleViewHolder.onClick(FlexibleViewHolder.java:122)
        at android.view.View.performClick(View.java:6597)
        at android.view.View.performClickInternal(View.java:6574)
        at android.view.View.access$3100(View.java:778)
        at android.view.View$PerformClick.run(View.java:25881)
        at android.os.Handler.handleCallback(Handler.java:873)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6649)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:826)

<action
            android:id="@+id/action_mainFragment_to_orderDetailsFragment"
            app:destination="@id/orderDetailsFragment"
            app:launchSingleTop="true">
            <argument
                android:name="orderId"
                android:defaultValue="-1" />
        </action>

this is single activity app

to open fragment I use

viewModel.someLiveData.observe(this, EventObserver {
            findNavController().navigate(R.id.action_assignFragment_to_registerPinFragment)
        })

or

btnButton.setOnClickListener {
            val email = etEmail.text.toString()
            val action = LoginFragmentDirections
                    .action_loginFragment_to_forgotPasswordFragment().setEmail(email)
            findNavController().navigate(action)
        }