[Bug]: After setting the 'allow_user_to_change_display_name' parameter to 'false', users are unable to modify their email.

[ywtoly]

⚠️ 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

After configuring 'allow_user_to_change_display_name'=>false, in config. php, it was found that users were unable to modify their full name (which was the expected result), and they were also unable to configure their email. Is this the expected result?

Steps to reproduce

1. Modify config. php
2. Add 'allow_user_tochange-display_name'=>false,
3. Ordinary users log in and enter the settings, but find that they cannot modify their email.

Expected behavior

The full name of the user cannot be modified, but email modifications should not be restricted.

Nextcloud Server version

30

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.3

Web server

Apache (supported)

Database engine version

MySQL

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

[solracsf]

Is this the expected result?

Per code, yes:

server/apps/settings/lib/Controller/UsersController.php

Lines 384 to 387 in 4c92c91

	if ($allowUserToChangeDisplayName === false
	&& in_array($property, [IAccountManager::PROPERTY_DISPLAYNAME, IAccountManager::PROPERTY_EMAIL], true)) {
	continue;
	}