Nextcloud: Access to all files of remote user through shared file

Steps to reproduce 1. User A shares a file "movie.mp4" with user B. 2. User B uses webdav to access files e.g. foldersync or nautilus 3. share is shown as regular file using webdav. 4. Copy the file and paste it to the same folder still using webdav. 5. A new folder will appear with the name...