[Bug]: Changed User Groups of Apps are not displayed without reload

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

You can limit apps to specific usergroups. The Problem is, that when you add multiple usergroups is not possible to see ALL assigned groups because there is no scrollbar.

That means you can even NOT remove some groups because you just can not get to it.

Worst case this is a security issue, if an app was assigned to a group and you are not even able to see that this user group has access to the app.

Here is an example. We have assigned three groups to the decks app, but only two are visible and we can not see / scroll to the third one.

Steps to reproduce

Expected behavior

I think we need to have a scrollbar like we have when a user is assigned to multiple user groups

Nextcloud Server version

32

Operating system

None

PHP engine version

None

Web server

None

Database engine version

None

Is this bug present after an update or on a fresh install?

None

Are you using the Nextcloud Server Encryption module?

None

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

List of activated Apps

Nextcloud Signing status

Nextcloud Logs

Additional info

No response

Start by locating the app user-group assignment UI described in the issue and compare it with the existing user multi-group control shown in the reference image. The fix is done when all assigned groups can be seen and removed without reloading, including the third group in the example; the issue provides no file or test entry point.