NPC Spawn Issue: Spiroc Lord / Spiroc Guardian

[Redriot]

Killing the Spiroc lord while the Spiroc Guardian is up, or killing the Spiroc Guardian while a Spiroc Vanquisher is up is resulting in the correct instant respawn of the lord/guardian, but 8 hours after the death of the first lord or guardian it is also respawning. Which is causing there to be 2 Spiroc Lords or 2 Spiroc Guardians up at the same time.

[Uthgaard]

There were two up tonight, so I went to them, went so far away that I couldn't tell which one I had targetted, and let luck decide which one got depopped. Then also cleared the resulting sirran. Let me know if it happens again.