I’ve had these summaries on all my notification stacks on my 16PM and iPad M4 until today. The summaries are still there in the messages list in Mail but not on the notification previews in NC either on my phone or iPad. I did restart both devices early this morning before I noticed this, so I’m not certain when the summaries disappeared. The number of notifications in each stack is still shown but not the summary. Has anyone else noticed something similar? Both devices are on the 18.1 general release.