Android Grouped Notifications do not Work

[ImranR98]

Describe the bug
The "grouped notification" example code provided in the documentation does not seem to work - I still get each notification separately.

To Reproduce

1. Create a Flutter app.
2. Paste the code from here: https://pub.dev/packages/flutter_local_notifications#grouping-notifications
3. Run the app.
4. See that the example notifications are not grouped. Instead, the two "normal" notifications appear separately, and the "summary" notification does not show up at all.

Expected behavior
The 2 example notifications should appear in a group.

Sample code to reproduce the problem
https://pub.dev/packages/flutter_local_notifications#grouping-notifications

[Levi-Lesches]

Thanks for reporting. I'll have some spare time later this week or next and I'll try to reproduce and debug this then