Comment # 11 on bug 964347 from Neil Brown

Now we are getting somewhere...
The file /etc/NetworkManager/dispatcher.d/nfs
contains
if /usr/bin/systemctl is-enabled nfs.service >/dev/null 2>&1; th
     /bin/mount -alt nfs,nfs4
fi

I'm guessing that
  /usr/bin/systemctl is-enabled nfs.service
reports "diabled".

Can you run
   systemctl enable nfs.service

and see if that changes things?