Publish button duplicates page folder

Since updating to the last versions (currently on v1.7.41.1), when I toggle a page publish button it duplicate the page into two folders:
- one with only the markdown file
- one prefixed with the medias (e.g. images)

Do you know where it comes from ?

The issue does not name a file or test. First reproduce the duplicate-folder behavior by toggling a page's publish button on Grav Admin v1.7.41.1, then trace where the page and media folders are generated. Done means publishing no longer creates two folders for the same page.

Written by the indexing model from the issue text.