The calendar does not tolerate recurring events.

Steps to reproduce

1.You create an event in the calendar and make it repeat every week
2.After saving the event, you must enter the event editing interface
3.Change the event date to the previous day and try to save and update all the repetitions
4.The event will not be rescheduled, and there will be no errors in the console
5.If you try to move the same or a new event to the next day, the current week's event will disappear, but the recurring events will remain unchanged

Expected behavior

Ideally, events should be scheduled for a specific date (day of the week)

Actual behavior

Events either do not change or disappear from the current week

Calendar app version

6.4.0

CalDAV-clients used

No response

Browser

Chrome

Client operating system

Windows 10

Server operating system

Ubuntu 24

Web server

Apache

Database engine version

MariaDB

PHP engine version

PHP 8.3

Nextcloud version

Nextcloud Hub 25 Autumn (32.0.5)

Updated from an older installed version or fresh install

Updated from an older version

List of activated apps

- activity: 5.0.0-dev.0
  - admin_audit: 1.22.0
  - bruteforcesettings: 5.0.0-dev.0
  - calendar: 6.4.0
  - circles: 32.0.0
  - cloud_federation_api: 1.16.0
  - comments: 1.22.0
  - contacts: 8.3.10
  - dav: 1.34.2
  - deck: 1.16.4
  - federatedfilesharing: 1.22.0
  - federation: 1.22.0
  - files: 2.4.0
  - files_downloadlimit: 5.0.0-dev.0
  - files_pdfviewer: 5.0.0-dev.0
  - files_reminders: 1.5.0
  - files_sharing: 1.24.1
  - files_trashbin: 1.22.0
  - files_versions: 1.25.0
  - flow_notifications: 3.0.0
  - forms: 5.2.7
  - groupfolders: 20.1.13
  - logreader: 5.0.0-dev.0
  - lookup_server_connector: 1.20.0
  - notes: 5.0.0
  - notifications: 5.0.0-dev.0
  - oauth2: 1.20.0
  - onlyoffice: 9.13.0
  - password_policy: 4.0.0-dev.0
  - privacy: 4.0.0-dev.0
  - profile: 1.1.0
  - provisioning_api: 1.22.0
  - recommendations: 5.0.0-dev.0
  - related_resources: 3.0.0-dev.0
  - serverinfo: 4.0.0-dev.0
  - settings: 1.15.1
  - sharebymail: 1.22.0
  - snappymail: 2.38.2
  - spreed: 22.0.12
  - support: 4.0.0-dev.0
  - survey_client: 4.0.0-dev.0
  - systemtags: 1.22.0
  - text: 6.0.1
  - theming: 2.7.0
  - twofactor_backupcodes: 1.21.0
  - unroundedcorners: 1.1.5
  - updatenotification: 1.22.0
  - user_status: 1.12.0
  - viewer: 5.0.0-dev.0
  - webhook_listeners: 1.3.0
  - workflowengine: 2.14.0

Nextcloud configuration

{
    "system": {
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            ""***REMOVED SENSITIVE VALUE***"",
            ""***REMOVED SENSITIVE VALUE***"",
            ""***REMOVED SENSITIVE VALUE***""
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "32.0.5.0",
        "overwrite.cli.url": "https:\/\/rcsadmin.ru",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "app_install_overwrite": [
            "documentserver_community",
            "files_archive",
            "backup",
            "mailnotifier",
            "file_upload_notification",
            "hidesidebars",
            "snappymail"
        ],
        "maintenance": false,
        "maintenance_window_start": 4,
        "force_language": "ru",
        "skeletondirectory": "",
        "defaultapp": "files,mail",
        "theme": "",
        "loglevel": 0,
        "default_timezone": "Asia\/"***REMOVED SENSITIVE VALUE***"",
        "memcache.local": "\\OC\\Memcache\\Redis",
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 6379
        },
        "mail_smtpmode": "smtp",
        "mail_sendmailmode": "smtp",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpport": "587",
        "mail_smtpauth": true,
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
        "mail_smtptimeout": 300,
        "remember_login_cookie_lifetime": 10368000,
        "session_lifetime": 7200,
        "session_keepalive": true,
        "update.check.disabled": "true",
        "debug": false
    }
}

Web server error log

Log file

Browser log

Additional info

No response

Start by reproducing the weekly recurring-event edit flow in the calendar app, changing the event to the previous and next day as described. Trace the recurring-event update path from the editing interface; done means all repetitions move to the selected weekday and no current-week event disappears.