Issue when copying files on SMB (Catalina)

Hi,

I've an issue on MAC OS Catalina when copying files on SMB.

The server is a Synology NAS DS218 with SMB service enabled (SMB1,SMB2,SMB3).

With Finder i access to my shared folders and when i copy a file from SMB server directly to another folder on SMB server (not to my computer), the copy works BUT the file is created and deleted before the copy.

I mean :

1/ I connect to my SMB server

2/ With Finder i go to my shared folder "documents" and go into a folder "folder"

3/ I copy the file "file.txt"

4/ I go to another folder "test" and i paste the file.

5/ The copy works

6/ In the shared folder recycle bin i can see the file "file.txt" with 0 bytes.

Here the logs on the server :

I tried to do the same from iOS13 Files App and no problem !!

Here the logs with iOS13 :

I've tried the following things and all works without problem :

1/ When i copy file from my computer to SMB server

2/ When i move a file (not copy)

3/ When i use AFP (not SMB)

4/ From iOS13 Files app

Is it an issue with MAC OS Catalina ?