ipv6 bgp strange effect

Hi
When we set up bgp ipv6 peering on a 7260 npe-g1 with ios 12,3(13) en do a
sh bgp neigh xxxx:yyyy::zzzz, we get this output
Sent Rcvd
Prefix activity: ---- ----
Prefixes Current: 0 1
Prefixes Total: 1 1
Implicit Withdraw: 1 0
Explicit Withdraw: 0 0
Used as bestpath: n/a 0
Used as multipath: n/a 0
according to my knowledge this would mean that our peering parner doesn't
receive/use any prefix of us. But he has us in his routing table, comming
from this peering session.
Is this a bug? All of our ipv6 peerings have this strange effect.
Everything works without problems, just this problem in the show command
arne