Each time Linux VM is started, a folder is created in one of my shares?

[cyberspectre]

Sort of a weird problem, I can't imagine the cause.

 

One of my VMs runs Zorin OS 15 (an Ubuntu 18.04 derivative). Works fine. But each time I start it, a folder named "Zorin OS 15 Core 64 bit" is created inside one of my UnRaid shares. I thought the VM's OS must be creating that folder for some reason, and that may be. Yet, it only happens in one share, while several others are mounted in the VM via fstab with the same parameters. Wouldn't mind so much if it created the folder and was done with it. But every time the VM starts, it creates a new folder ending in (1), (2), etc. Any ideas?