[Bug]: Calendar Reminders Editing broken on iOS Safari

⚠️ 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 clicking on the type of reminder (notification or email), reminder time (relative to event/on date), edit time or remove reminder, the appropriate submenu should appear and you should be able to edit the same way you do on a laptop or desktop.

Actual behaviour: instead of being able to change that field, you are brought elsewhere in the event fields (not having to do with the reminders)

Steps to reproduce

1.Try to modify existing reminder for a calendar event while on iOS safari
2. Try to modify existing reminder for a calendar event while on iOS safari
3. instead of being able to change that field, you are brought elsewhere in the event fields (not having to do with the reminders)

Expected behavior

When clicking on the type of reminder (notification or email), reminder time (relative to event/on date), edit time or remove reminder, the appropriate submenu should appear and you should be able to edit the same way you do on a laptop or desktop.

Installation method

Community Web installer on a VPS or web space

Nextcloud Server version

28

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.2

Web server

Nginx

Database engine version

MariaDB

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

Upgraded to a MAJOR version (ex. 22 to 23)

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***",
        "trusted_domains": [
            "localhost",
            "cloud.villedebuzet.com"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "28.0.3.2",
        "overwrite.cli.url": "https:\/\/cloud.mydomain.com\/",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "default_phone_region": "US",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "ldapProviderFactory": "OCA\\User_LDAP\\LDAPProviderFactory",
        "updatechecker": false,
        "memcache.local": "\\OC\\Memcache\\APCu",
        "integrity.check.disabled": true,
        "filelocking.enabled": true,
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": "6379",
            "timeout": "0.0",
            "password": "***REMOVED SENSITIVE VALUE***"
        },
        "hashing_default_password": true,
        "localstorage.allowsymlinks": true,
        "simpleSignUpLink.shown": false,
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpmode": "smtp",
        "mail_sendmailmode": "smtp",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpsecure": "ssl",
        "mail_smtpport": "465",
        "mail_smtpauth": 1,
        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
        "app_install_overwrite": [
            "sharingpath"
        ],
        "maintenance": false,
        "loglevel": 2,
        "mail_smtpstreamoptions": {
            "ssl": {
                "allow_self_signed": true,
                "verify_peer": false,
                "verify_peer_name": false
            }
        },
        "memories.exiftool": "\/var\/www\/nextcloud\/apps\/memories\/bin-ext\/exiftool-amd64-glibc",
        "memories.vod.path": "\/var\/www\/nextcloud\/apps\/memories\/bin-ext\/go-vod-amd64",
        "logfile": "\/var\/log\/nextcloud\/nextcloud.log",
        "maintenance_window_start": 1,
        "enabledPreviewProviders": [
            "OC\\Preview\\Image",
            "OC\\Preview\\HEIC",
            "OC\\Preview\\TIFF",
            "OC\\Preview\\Movie"
        ],
        "memories.vod.disable": false,
        "memories.vod.ffmpeg": "\/usr\/bin\/ffmpeg",
        "memories.vod.ffprobe": "\/usr\/bin\/ffprobe"
    }
}

List of activated Apps

Enabled:
  - activity: 2.20.0
  - bruteforcesettings: 2.8.0
  - calendar: 4.6.6
  - cloud_federation_api: 1.11.0
  - comments: 1.18.0
  - contacts: 5.5.3
  - dashboard: 7.8.0
  - dav: 1.29.1
  - external: 5.3.1
  - federatedfilesharing: 1.18.0
  - federation: 1.18.0
  - files: 2.0.0
  - files_accesscontrol: 1.18.0
  - files_external: 1.20.0
  - files_pdfviewer: 2.9.0
  - files_reminders: 1.1.0
  - files_sharing: 1.20.0
  - files_trashbin: 1.18.0
  - files_versions: 1.21.0
  - firstrunwizard: 2.17.0
  - fulltextsearch: 28.0.1
  - logreader: 2.13.0
  - lookup_server_connector: 1.16.0
  - mail: 3.5.7
  - nextcloud_announcements: 1.17.0
  - notifications: 2.16.0
  - oauth2: 1.16.3
  - password_policy: 1.18.0
  - photos: 2.4.0
  - previewgenerator: 5.4.0
  - privacy: 1.12.0
  - provisioning_api: 1.18.0
  - recommendations: 2.0.0
  - related_resources: 1.3.0
  - richdocuments: 8.3.2
  - serverinfo: 1.18.0
  - settings: 1.10.1
  - sharebymail: 1.18.0
  - sharingpath: 0.4.4
  - snappymail: 2.35.2
  - support: 1.11.0
  - suspicious_login: 6.0.0
  - systemtags: 1.18.0
  - tasks: 0.15.0
  - text: 3.9.1
  - theming: 2.3.0
  - twofactor_backupcodes: 1.17.0
  - user_ldap: 1.19.0
  - user_status: 1.8.1
  - viewer: 2.2.0
  - weather_status: 1.8.0
  - workflowengine: 2.10.0
Disabled:
  - admin_audit: 1.18.0
  - circles: 28.0.0-dev (installed 27.0.1)
  - contactsinteraction: 1.9.0 (installed 1.8.0)
  - encryption: 2.16.0
  - files_rightclick: 1.6.0 (installed 1.6.0)
  - survey_client: 1.16.0 (installed 1.15.0)
  - twofactor_totp: 10.0.0-beta.2
  - updatenotification: 1.18.0 (installed 1.17.0)

Nextcloud Signing status

No response

Nextcloud Logs

No response

Additional info

No response

Start by reproducing reminder editing on iOS Safari with Nextcloud Server 28 and Calendar 4.6.6, comparing it with laptop or desktop behavior. Trace the calendar reminder controls from the affected event fields; done means reminder type, time, edit, and remove actions open the intended submenus and remain editable on iOS Safari.