Groupfolders, advanced permissions not working

[gvansanden]

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Steps to reproduce

1. Create a groupfolder with advanced permissions and assign an admin group
2. Set a group containing user B to have read only rights to the groupfolder
3. As a member of the admin group, give user B more rights to a subfolder in the groupfolder

Expected behaviour

User B should have the override rights to the subfolder, so write and/or delelte

Actual behaviour

User B has the default rights inherited from his group

Server configuration

Operating system:
Ubuntu 20.04

Web server:
Apache

Database:
Postgres

PHP version:
7.4

Nextcloud version: (see Nextcloud admin page)
21.0.1

Group folders version:
9.0.2

Updated from an older Nextcloud/ownCloud or fresh install:
updated from 20.0

Where did you install Nextcloud from:
tar/gz

Are you using external storage, if yes which one: local/s3/smb/sftp/...
no

Are you using encryption: yes/no
no

Are you using an external user-backend, if yes which one: LDAP/ActiveDirectory/Webdav/Saml/...
AD

Client configuration

Browser:
Firefox and Chrome

Operating system:
Linux and Windows 10

Logs

Nextcloud log (data/nextcloud.log)

Nextcloud log

No log entries during the operation:
{"reqId":"Djj65PG35v5eaSBSkLso","level":2,"time":"2021-06-27T09:27:44+00:00","remoteAddr":"192.168.1.40","user":"admin","app":"impersonate","method":"POST","url":"/index.php/apps/impersonate/user","message":"Changing to user 28BB1CCC-F7C2-4972-9965-72B34724411C","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:89.0) Gecko/20100101 Firefox/89.0","version":"21.0.1.1"}

Browser log

As admin:

As user:

[Pytal]

This is expected behaviour as Group permissions take precedence over Advanced permissions, closing in favour of proposal #655