Truenas creates sub-dataset with SMB user's name

1. Create pool "pool1"
2. Create user "user"
3. Create group "group1"
3. Create dataset "fs1" (set share type = smb at bottom)
4. Create SMB share "fs1" (set purpose = Private SMB Datasets and Shares)
5. Change filesystem ACL user/group to user/group1 (check Apply box below both)
6. From Windows PC (logged in as "user"), browse to \\nas\fs1
7. Write files to root of \\nas\fs1 from Windows
8. Check Truenas>Storage>Pools. System somehow created a sub-dataset (pool1>fs1>user), and files added to "fs1" by "user" now appear in pool1>fs1>user insetad of pool1>fs1