A selected directory has the identity of a file

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Steps to reproduce

• Write an app which lets the user pick a folder by using UIDocumentPickerViewController
• Connect the iOS Nextcloud app to a Nextcloud instance and make sure there is at least one folder in it.
• Run your test app and pick a folder on the Nextcloud (file provider)
• check if the picked item is a directory (by using FileManager.default.fileExists(atPath: pickedURL.path(percentEncoded: false), isDirectory: &isDirectory))

Expected behaviour

isDirectory.boolValue must be true

Actual behaviour

isDirectory.boolValue is false and it looks like it is a file containing data.
The content of the file is a string: "This is the WebDAV interface. It can only be accessed by WebDAV clients such as the Nextcloud desktop sync client."

po String(data: try! Data(contentsOf: pickedURL), encoding: .utf8)
▿ Optional

• some : "This is the WebDAV interface. It can only be accessed by WebDAV clients such as the Nextcloud desktop sync client."

Reasoning or why should it be changed/implemented?

This looks like a bug

Environment data

iOS version: e.g. iOS 17.6.1
iPadOS 18.2.1 (22C164)

Nextcloud iOS app version: see More > Settings
6.2.4 (2) / latest version from Testflight at this time

Server operating system:

Web server: Apache, nginx

Database:

PHP version:

Nextcloud version: see Nextcloud admin page
30.0.5

Reproduce the issue with UIDocumentPickerViewController and FileManager using a Nextcloud folder, following the steps in the report. Start by locating the iOS app's file-provider handling; done means a picked Nextcloud directory is reported with isDirectory=true instead of appearing as a file containing the WebDAV response.