[Bug]: Cannot save custom share permissions when all permissions are selected

⚠️ 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

When selecting Custom Permissions in the shared users list and granting Read, Create, Edit, Share, and Delete permissions all at once, the settings cannot be saved.
The settings can only be saved if at least one permission is removed.

Steps to reproduce

When selecting Custom Permissions in the shared users list and granting Read, Create, Edit, Share, and Delete permissions all at once, the settings cannot be saved.
The settings can only be saved if at least one permission is removed.

Expected behavior

Description:
When selecting Custom Permissions in the shared users list and granting Read, Create, Edit, Share, and Delete permissions all at once, the settings cannot be saved.
The settings can only be saved if at least one permission is removed.

Nextcloud Server version

32

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.2

Web server

Nginx

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 reproducing the custom-permission save failure in Nextcloud Server 32 with all five permissions selected. Trace the share-permission save flow to identify why the complete permission set is rejected, then verify that the settings save successfully and remain correct after reloading.