IssueTracker

This is because a PendingIntent doesn't use the extras/arguments to compare 2 intents, so each notification actually use the same pending intent, and the extras arguments are updated (PendingIntent.FLAG_UPDATE_CURRENT).
 If you have a <deepLink> element in your destination, you should use the Uri to navigate to it.

```
<deepLink app:uri="http://www.example.com/users/{id}">

Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.example.com/users/42");
```

This has been fixed internally in https://android-review.googlesource.com/861068 and will be available in Navigation 1.0.0-alpha10. Navigation now uses both the destination ID and the arguments to build a unique requestCode for the PendingIntent, ensuring that you can create multiple PendingIntents to the same destination.