SFTP emits wrong events when renaming file

[furstenheim]

You can see here https://stackoverflow.com/questions/54588550/sftp-move-file-does-not-trigger-event for a stackoverflow question on this issue.

Basically, I have two servers, one with openssh-sftp-server the other one with sftp-server.
If I use the command rename from the sftp protocol. In sftp-server it triggers a 'MOVE_TO' event that can be detected with iwatchnotify. However, using a real sftp server with openssh-sftp-server it does not trigger those events.

I suppose the problem is that sftp-server is actually moving the file and not really renaming.