WevDAV sync. repeats GET and PUT with many files?

[B Butty]

Hello, I have found other problems. This is one of two:

When syncing with WebDAV and there are a lot of files (e.g. images) in a repository, after the initial sync (GET), the files are somehow PUT back to the server.

• The number of files (images) is about 250, the total size is about 74MB.
• The WebDAV server is Nextcloud.

Example repo(dir). structure:

  the note.md

  resources/

    image files embedded in the note...

I suppose the file's mod-time has something to do with this problem: Eg. When syncing (GET), mtime is changed to current time?