This content was released on Feb 16 2021. The official support period is 6-months from this date.
When targeting Android 11 or higher, you have to give a shortcut to any notification you want to show in the conversation space. Shortcuts are a handy way for a user to jump right into a conversation.
This is a companion discussion topic for the original entry at https://www.kodeco.com/20853889-bubble-notifications-in-android/lessons/3