[Bug]: Delegated calendars - Node with name 'trashbin' could not be found

[z3ky]

⚠️ 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

macOS Calendar App doesn't find delegated calendars.
User A gives permission to delegate its calendars to User B. The configuration is done in the calendar app.
In the Calendar App account of User B, the delegation is visible an activated. But, the calendars of User A will not be visible.

After activating the delegation, the nc logs says:

userb [06/Dec/2023:12:17:24 +0000] "PROPFIND /remote.php/dav/calendars/usera/ HTTP/1.1" 404 1184 "-" "macOS/13.6.1 (22G313) dataaccessd/1.0"

and

"user":"userb","app":"webdav","method":"PROPFIND","url":"/remote.php/dav/calendars/usera/","message":"Node with name 'trashbin' could not be found"

Maybe this is related to #27372 since userb has access to usera's calendars (tested in the browser) but not to

/remote.php/dav/calendars/usera/trashbin (also tested in the browser)

Steps to reproduce

1. Install NC and the Calendar App
2. Create User A and User B
3. Give User B the permission to delegate the calendars of User A using macOS Calendar App
4. Enable the delegation in User B's account in the macOS Calendar App.

Expected behavior

Calendars of User A should be visible as delegated calendars.

Installation method

Community Docker image

Nextcloud Server version

27

Operating system

Debian/Ubuntu

PHP engine version

None

Web server

None

Database engine version

None

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

None

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

No response

List of activated Apps

No response

Nextcloud Signing status

No response

Nextcloud Logs

No response

Additional info

No response