Email and Push Notifications including Deck and others

Hi all,
I am running Nextcloud 27 and current version of deck app in a docker-compose setting.
I activated the notifications app and activated basically all ticks in the notification settings for email and push notifications including the ones for deck. A working email configuration is established (test mails come through properly).

When I add a new card and add myself to the card I receive a notification in Nextcloud web app stating what happened e.g. “you where added to card XYZ in deck”.
Couple of minutes later I receive an email stating only “something happened in your activity in nextcloud”.

What can I do to have the exact event written in the email notifications? Is this supposed to be the case?

Best Regards and thanks for your help!