calendar Appointments not seeing events with "busy only" visibility

Steps to reproduce

Create an appointments page
Create an event conflicting with some of the appointment slots
Set visibility to "When shared show only busy"
Open the appointments page and try to book an appointment on the same day as the conflicting event

Expected behavior

Only slots which do not conflict with the event in calendar should be offered

Actual behaviour

Slots, including those which conflict with the calendar event, are offered and can be booked

Calendar app version

5.0.1

CalDAV-clients used

n/a

Browser

Arc Browser

Client operating system

Windows 11

Server operating system

TrueNAS Scale (Docker)

Web server

Apache

Database engine version

PostgreSQL

PHP engine version

PHP 8.2

Nextcloud version

30.0.0

Updated from an older installed version or fresh install

Updated from an older version

List of activated apps

Enabled:

activity: 3.0.0
admin_audit: 1.20.0
announcementcenter: 7.0.1
appointments: 2.1.12
approval: 2.0.0
assistant: 2.1.1
bruteforcesettings: 3.0.0
calendar: 5.0.1
calendar_resource_management: 0.8.0
call_summary_bot: 2.0.0
cfg_share_links: 6.1.1
checksum: 1.2.5
circles: 30.0.0-dev
cloud_federation_api: 1.13.0
comments: 1.20.1
contacts: 6.1.0
contactsinteraction: 1.11.0
dashboard: 7.10.0
dav: 1.31.1
deck: 1.14.1
event_update_notification: 2.5.0
federatedfilesharing: 1.20.0
federation: 1.20.0
files: 2.2.0
files_3dmodelviewer: 0.0.14
files_accesscontrol: 1.20.1
files_antivirus: 5.6.0
files_automatedtagging: 1.20.0
files_confidential: 3.0.3
files_downloadactivity: 1.17.0
files_downloadlimit: 3.0.0
files_pdfviewer: 3.0.0
files_reminders: 1.3.0
files_retention: 1.19.0
files_sharing: 1.22.0
files_trashbin: 1.20.1
files_versions: 1.23.0
firstrunwizard: 3.0.0
forms: 4.3.2
gpoddersync: 3.10.0
groupfolders: 18.0.3
integration_openai: 3.1.2
integration_zammad: 3.0.1
libresign: 10.0.2
logreader: 3.0.0
lookup_server_connector: 1.18.0
mail: 4.0.2
metadata: 0.21.0
nextcloud_announcements: 2.0.0
notes: 4.11.0
notifications: 3.0.0
oauth2: 1.18.1
password_policy: 2.0.0
passwords: 2024.9.20
photos: 3.0.2
polls: 7.2.4
privacy: 2.0.0
provisioning_api: 1.20.0
quota_warning: 1.20.0
recognize: 8.1.1
recommendations: 3.0.0
related_resources: 1.5.0
repod: 3.3.0
richdocuments: 8.5.2
richdocumentscode: 24.4.802
secrets: 2.1.1
serverinfo: 2.0.0
settings: 1.13.0
sharebymail: 1.20.0
skyprint: 0.1.6
spreed: 20.0.1
support: 2.0.0
survey_client: 2.0.0
suspicious_login: 8.0.0
systemtags: 1.20.0
tables: 0.8.1
text: 4.1.0
theming: 2.5.0
twofactor_backupcodes: 1.19.0
twofactor_nextcloud_notification: 4.0.0
twofactor_webauthn: 2.0.0
updatenotification: 1.20.0
user_status: 1.10.0
user_usage_report: 1.14.0
viewer: 3.0.0
weather_status: 1.10.0
webhook_listeners: 1.1.0-dev
workflow_pdf_converter: 1.15.0
workflowengine: 2.12.0

Nextcloud configuration

{ "system": { "htaccess.RewriteBase": "/", "memcache.local": "\OC\Memcache\APCu", "apps_paths": [ { "path": "/var/www/html/apps", "url": "/apps", "writable": false }, { "path": "/var/www/html/custom_apps", "url": "/custom_apps", "writable": true } ], "upgrade.disable-web": true, "passwordsalt": "REMOVED SENSITIVE VALUE", "secret": "REMOVED SENSITIVE VALUE", "trusted_domains": [ "localhost", "MY HOST" ], "datadirectory": "REMOVED SENSITIVE VALUE", "dbtype": "pgsql", "version": "30.0.0.14", "overwrite.cli.url": "http://localhost", "dbname": "REMOVED SENSITIVE VALUE", "dbhost": "REMOVED SENSITIVE VALUE", "dbport": "", "dbtableprefix": "oc_", "dbuser": "REMOVED SENSITIVE VALUE", "dbpassword": "REMOVED SENSITIVE VALUE", "installed": true, "instanceid": "REMOVED SENSITIVE VALUE", "overwriteprotocol": "https", "trusted_proxies": "REMOVED SENSITIVE VALUE", "maintenance_window_start": 1, "default_phone_region": "CZ", "mail_domain": "REMOVED SENSITIVE VALUE", "mail_from_address": "REMOVED SENSITIVE VALUE", "mail_smtpmode": "smtp", "mail_smtphost": "REMOVED SENSITIVE VALUE", "mail_sendmailmode": "smtp", "mail_smtpauth": 1, "mail_smtpname": "REMOVED SENSITIVE VALUE", "mail_smtppassword": "REMOVED SENSITIVE VALUE", "mail_smtpport": "587", "defaultapp": "", "maintenance": false, "loglevel": 0, "memcache.distributed": "\OC\Memcache\Redis", "memcache.locking": "\OC\Memcache\Redis", "redis": { "host": "REMOVED SENSITIVE VALUE", "password": "REMOVED SENSITIVE VALUE", "port": 6379 }, "app_install_overwrite": [ "transfer" ] } }