Double notification in emails and activity app

Hello dear community!

We are running Nextcloud version 21.0.4 with the installed apps “LDAP user and group backend”, “Activity”, “Groupfolders” and others, but I’m sure they don’t matter in this case.

The following problem:
For example, when an LDAP user downloads or creates a shared file / folder, the Activity app and the email notification always show me the incident once with the plain name and then additionally with the ID.


What do I want?:
I want the Activies and the email notifications to show only the plain name and not both.

Does anyone know a solution or has an idea what the problem could be?