NFS security issue?

Hello,

I am running OneFS 7.0.2.1 and am noticing something strange with NFS.  This is a clean implementation that is joined to Active Directory and has Kerberos set up and functioning for NFS v4.  I set up an export to use Kerberos 5 Privacy mode (krb5p) which works but I can also mount using auth_sys even though that isn't specified as an option.  The default export was deleted as well.  See below for my screen dumps.

myisilon-3# isi nfs exports list
ID   Paths          Description
-------------------------------
2    /ifs/data/test
-------------------------------
Total: 1
myisilon-3# isi nfs exports view 2
                     ID: 2
                  Paths: /ifs/data/test
            Description:
                Clients: -
           Root Clients: -
      Read Only Clients: -
     Read Write Clients: -
     Unresolved Clients: -
               All Dirs: No
             Block Size: 8.0K
           Can Set Time: Yes
    Commit Asynchronous: No
Directory Transfer Size: 128.0K
               Encoding: DEFAULT
         Map Lookup UID: Yes
              Map Retry: Yes
                Map All
                     User : -
                   Groups : -
               Map Root
                     User : nobody
                   Groups : -
               Map Full: Yes
          Max File Size: 8192.00000P
              Read Only: No
            Readdirplus: Yes
   Readdirplus Prefetch: 10
  Return 32Bit File Ids: No
Read Transfer Max Size: 1.00M
Read Transfer Multiple: 512
     Read Transfer Size: 128.0K
          Security Type: krb5p
   Setattr Asynchronous: No
               Symlinks: Yes
             Time Delta: 1e-09
  Write Datasync Action: datasync
   Write Datasync Reply: datasync
  Write Filesync Action: filesync
   Write Filesync Reply: filesync
  Write Unstable Action: unstable
   Write Unstable Reply: unstable
Write Transfer Max Size: 1.00M
Write Transfer Multiple: 512
    Write Transfer Size: 512.0K
myisilon-3#

[root@chad /]# mount -o sec=krb5p myisilon.domain.com:/ifs/data/test /nfs_krb5p
[root@chad /]# mount myisilon.domain.com:/ifs/data/test /nfs_sys
[root@chad /]# cd /nfs_krb5p/
[root@chad nfs_krb5p]# touch secret_file
[root@chad nfs_krb5p]# echo "My Secret" > secret_file
[root@chad nfs_krb5p]# cat secret_file
My Secret
[root@chad nfs_krb5p]# cd /nfs_sys/
[root@chad nfs_sys]# ls
secret_file  test
[root@chad nfs_sys]# ls -l
total 51
-rw-r--r--. 1 1000000 root 10 Jul 18 16:55 secret_file
-rw-r--r--. 1 root    root  5 Jul 18 15:43 test
[root@chad nfs_sys]# cat secret_file
My Secret
[root@chad nfs_sys]#

Is this a bug?  If so, is it fixed in a later release?  One way to fix this is to remove AUTH_SYS as an option under NFS default settings but if one needs both AUTH_SYS and krb5 that won't work.