[Bug]: (Files) Setting a reminder for a file ignores the timezone

[lufer22]

⚠️ 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

Setting a file reminder through the Files app ignores the user's timezone and saves it using UTC time.
I live in Brazil, so my timezone is UTC-3.
To test this, I used the following:

After running occ files:reminders, it saved this:

Steps to reproduce

1. Set a reminder for a file in the Files app.
2. Observe, using occ files:reminders, that the timezone was ignored.

Expected behavior

The timezone should be respected when saving the reminder.

Nextcloud Server version

30

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.3

Web server

Apache (supported)

Database engine version

MariaDB

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

Updated from a MINOR version (ex. 32.0.1 to 32.0.2)

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

{
    "system": {
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "log_type": "file",
        "logfile": "\/var\/log\/groupware\/groupware_s4.log",
        "loglevel": 0,
        "logdateformat": "F d, Y H:i:s",
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "default_language": "pt",
        "default_locale": "pt_BR",
        "dbtype": "mysql",
        "overwrite.cli.url": "http:\/\/localhost",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "allow_local_remote_servers": true,
        "lost_password_link": "disabled",
        "simpleSignUpLink.shown": false,
        "updater.release.channel": "git",
        "upgrade.disable-web": true,
        "updatechecker": false,
        "has_internet_connection": false,
        "trashbin_retention_obligation": "auto,10",
        "knowledgebaseenabled": false,
        "profile.enabled": false,
        "allow_user_to_change_display_name": false,
        "auth.bruteforce.protection.enabled": false,
        "activity_expire_days": 30,
        "app.mail.verify-tls-peer": false,
        "auth.webauthn.enabled": false,
        "overwriteprotocol": "https",
        "appstoreenabled": false,
        "user_backends": [
            {
                "class": "\\OCA\\UserExternal\\IMAP",
                "arguments": [
                    "127.0.0.1",
                    143,
                    null,
                    null,
                    false,
                    false
                ]
            }
        ],
        "memcache.local": "\\OC\\Memcache\\APCu",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": "0",
            "password": "***REMOVED SENSITIVE VALUE***",
            "dbindex": 0,
            "timeout": 1.5,
            "read_timeout": 1.5
        },
        "memcached_server": [
            "localhost",
            "\/tmp\/memcached.sock"
        ],
        "theme": "",
        "trusted_domains": [
            "localhost",
            "devlucas.internetcontrolada.com"
        ],
        "mail_smtpmode": "smtp",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpport": "587",
        "mail_smtpauth": true,
        "mail_smtpauthtype": "LOGIN",
        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpstreamoptions": {
            "ssl": {
                "allow_self_signed": true,
                "verify_peer": false,
                "verify_peer_name": false
            }
        },
        "version": "30.0.10.1",
        "maintenance": false,
        "session_lifetime": "86400",
        "remember_login_cookie_lifetime": "86400",
        "debug": true
    }
}

List of activated Apps

Enabled:
  - activity: 3.0.0
  - calendar: 5.1.3
  - calendar_resource_management: 0.9.0
  - cloud_federation_api: 1.13.0
  - comments: 1.20.1
  - contacts: 7.0.6
  - contactsinteraction: 1.11.0
  - dashboard: 7.10.0
  - dav: 1.31.1
  - deck: 1.14.4
  - federatedfilesharing: 1.20.0
  - files: 2.2.0
  - files_pdfviewer: 3.0.0
  - files_reminders: 1.3.0
  - files_sharing: 1.22.0
  - files_trashbin: 1.20.1
  - jitsi: 0.19.0
  - logreader: 3.0.0
  - lookup_server_connector: 1.18.0
  - notifications: 3.0.0
  - oauth2: 1.18.1
  - provisioning_api: 1.20.0
  - settings: 1.13.0
  - sharebymail: 1.20.0
  - snappymail: 2.38.2
  - spreed: 20.1.6
  - systemtags: 1.20.0
  - tasks: 0.16.1
  - theming: 2.6.0
  - theming_customcss: 1.17.0
  - twofactor_backupcodes: 1.19.0
  - twofactor_totp: 12.0.0-dev
  - updatenotification: 1.20.0
  - user_external: 3.4.0
  - user_status: 1.10.0
  - viewer: 3.0.0
  - weather_status: 1.10.0
  - webhook_listeners: 1.1.0-dev
Disabled:
  - admin_audit: 1.20.0
  - encryption: 2.18.0
  - federation: 1.20.0 (installed 1.19.0)
  - files_external: 1.22.0
  - files_versions: 1.23.0 (installed 1.22.0)
  - notify_push: 0.7.0
  - testing: 1.20.0
  - user_ldap: 1.21.0
  - user_migration: 7.0.1
  - workflowengine: 2.12.0

Nextcloud Signing status

Integrity checker has been disabled. Integrity cannot be verified.

Nextcloud Logs

Additional info

No response