[NC 18.0] how-to show group members to users

Nextcloud version (eg, 12.0.2): 18.0
Operating system and version (eg, Ubuntu 17.04): Ubuntu 18.04
Apache or nginx version (eg, Apache 2.4.25): 2.4.29
PHP version (eg, 7.1): 7.4.2

The issue you are facing:

How can I make users see the members of groups which they are member of?
As an administrator you can see it in the user management, but is there a way to let users see this for themselves? This way the user knows who his data is shared with when sharing with groups is done.

Exactly this question was asked by one of my users:

After a few searches here in the forum, in the AppStore and via Google, I fear that there is currently no “out of the box” solution for this.
If someone can confirm this, then I can at least stop looking.

Thanks Kolja

Perhaps you can use additional Circles with the same name and users. Not tested.

https://apps.nextcloud.com/apps/circles

Yes and no.
The circles have no authorization in many apps, so it would really not be a replacement. And keeping the group memberships in sync is very prone to errors. Mainly because the group administrators have to do that for their group too.

But thanks for the idea.