Widget not displaying Tasks with due dates

Steps to reproduce

1. Open the browser (Firefox 117.0.1)
2. Open the Dashboard
3. No Deck tasks (with due dates in this week) are visible in the Calendar Widget

Expected behavior

Calendar Widget should show Deck tasks as next events, as before (Nextcloud 26.0.7).

Actual behaviour

Calendar Widget is empty (as by chance I don't have calendar events this week but only tasks). Note that Deck tasks are visible in the Calendar module.

Calendar app version

4.5.1

CalDAV-clients used

DAVx5

Browser

Firefox 117.0.1

Client operating system

Windows 10

Server operating system

No response

Web server

Nginx

Database engine version

MySQL

PHP engine version

PHP 8.1

Nextcloud version

27.1.1

Updated from an older installed version or fresh install

Updated from an older version

List of activated apps

Enabled:
 - activity: 2.19.0
 - bookmarks: 13.1.1
 - bruteforcesettings: 2.7.0
 - calendar: 4.5.1
 - camerarawpreviews: 0.8.2
 - circles: 27.0.1
 - cloud_federation_api: 1.10.0
 - collectives: 2.7.1
 - comments: 1.17.0
 - contacts: 5.4.1
 - contactsinteraction: 1.8.0
 - cospend: 1.5.10
 - dashboard: 7.7.0
 - dav: 1.27.0
 - deck: 1.11.0
 - federatedfilesharing: 1.17.0
 - federation: 1.17.0
 - files: 1.22.0
 - files_pdfviewer: 2.8.0
 - files_reminders: 1.0.0
 - files_rightclick: 1.6.0
 - files_sharing: 1.19.0
 - files_trashbin: 1.17.0
 - files_versions: 1.20.0
 - firstrunwizard: 2.16.0
 - forms: 3.3.1
 - groupfolders: 15.3.1
 - guests: 2.5.0
 - logreader: 2.12.0
 - lookup_server_connector: 1.15.0
 - maps: 1.1.1
 - nextcloud_announcements: 1.16.0
 - notes: 4.8.1
 - notifications: 2.15.0
 - oauth2: 1.15.1
 - password_policy: 1.17.0
 - photos: 2.3.0
 - polls: 5.3.2
 - privacy: 1.11.0
 - provisioning_api: 1.17.0
 - recommendations: 1.6.0
 - related_resources: 1.2.0
 - richdocuments: 8.2.0
 - serverinfo: 1.17.0
 - settings: 1.9.0
 - sharebymail: 1.17.0
 - spreed: 17.1.1
 - support: 1.10.0
 - survey_client: 1.15.0
 - suspicious_login: 5.0.0
 - systemtags: 1.17.0
 - tables: 0.6.0
 - tasks: 0.15.0
 - text: 3.8.0
 - theming: 2.2.0
 - twofactor_backupcodes: 1.16.0
 - unsplash: 2.2.1
 - updatenotification: 1.17.0
 - user_status: 1.7.0
 - viewer: 2.1.0
 - weather_status: 1.7.0
 - welcome: 1.0.10
 - workflowengine: 2.9.0
Disabled:
 - admin_audit: 1.10.0
 - encryption
 - files_external
 - impersonate: 1.14.0
 - talk_matterbridge: 1.26.0
 - twofactor_totp
 - user_ldap

Nextcloud configuration

No response

Web server error log

No response

Log file

No response

Browser log

No response

Additional info

No response

Reproduce the issue in the Dashboard Calendar Widget with a Deck task due during the current week, then compare its output with the Calendar module, where the task is visible. Done means the widget displays Deck tasks as next events alongside calendar events.