IssueTracker

Component used: Navigation
Version used: 1.0.0-rc01
Devices/Android versions reproduced on: 7.0, 9.0 (Emulators)

According to https://developer.android.com/topic/libraries/architecture/navigation/navigation-deep-link ,
if a destination is opened with IMPLICIT deeplink and WITHOUT Intent.FLAG_ACTIVITY_NEW_TASK flag, then the destination is opened in the same task. After that if user clicks UP, then the actual parent should be recreated in a separate task, but it doesn't work. The UP button in this case does nothing, as well as manual navigateUp() method call.

I tried to modify the code to check both Toolbar and ActionBar approaches and also tried to create the NavHostFragment via xml and code. In all this cases, the behavior of UP button remained the same.

I attached a simple project that shows this situation. It contains 2 modules:
- app - an app with 2 fragments (root and child). The child fragment's destination supports a deeplink.
- deeplinkstarter - one button app, that starts an implicit deeplink to the child fragment of the 'app'.

I consider this as major defect because the library doesn't behave as it is explicitly said in the documentation.
Please, improve.