Hi. I have the same issue Changed phone to Android 8.0.0 nonRooted, Tasker 5.6.1b.bf3, AutoNotification 3.9.5b (tried to switch to beta cause on 3.9.1 same problem). Here my task from larger project https://taskernet.com/shares/?user=AS35m8lOkAQMobB9NiJ5UlmfmhcFmL6PwqooIbifqVWkiMvJFMqTkNiCT6nQd4ArBMxYhfHY&id=Task:Tiles Changing notification to non persistent does not change duplicatiing. If I can help with some debugging, you can tell me.