Virtual files deleted after moving


On Windows, when I try to move a virtual file from a virtual folder to another one, the file is moved, then few seconds later, when the sync is finished, the file is deleted.
I can restore it to the original folder thank to the web page.

If I do the same with a file available locally, all works as expected.

I’m using Nextcloud 21.0.1 on Debian Buster for the server part and Windows client 3.2.1
Is it a bug ?

Edit : If I move the virtual file to its parent directory, it is deleted, but if I move the file to a child folder, the file is moved as expected.