Samba Mystery Share

I made a new fileserver, it is not yet live .. I simply copied our smb.conf file from our old box with a couple of minor adjustments and all works well, _however_, if I look at that box with a windows file explorer, among the shares that should be there, is one called "nobody". I have no clue why it's there, and it can't be entered. Logs don't tell me anything

Debian 12 / Samba 4.17.12

Any thoughts?