Component used: Navigation Version used: 2.5.1 Devices/Android versions reproduced on: multiple devices/emulator variants

The onSaveInstanceState not called again after leave/resume app and navigate from nested navigation target. Sample project and screenrecord attached.

The major part is that I leave the app for a short time so onSaveInstanceState is called for the current Fragment with the current state (e.g. have an open dialog). Then I navigation to a child fragment (nested in the parent navigation graph). From this nested Fragment I navigate to another navigation root.

Without leaving the app before, the previous root and child Fragments onSaveInstanceState are called
With leaving the app before, only the child Fragments onSaveInstanceState is called. But not the root Fragment. So the root Fragment does not store his real current state (e.g. dialog is closed). This can be seen by the reappearing bottom sheet shadow.