I’m not sure if this has been resolved since the most recent patch; regardless, the centaurus seeker does not seem to be spawning at all. Otherwise, I would have been able to see the yellow objective mobs on the mini map. I wonder how others have passed this part of the quest line all the way up to kama quests.
Although it might seem like it at the first glance, this issue has not been forgotten.
This issue and issues similar to this one are caused by invalid/outdated geodata, which we are in the process of updating. However this is a huge task which is why we are aiming to have it released alongside the new core. That said, it’s not impossible that it will be released before then, just that it is improbable.
Had this issue been a simple fix only affecting the Centaurs this would have been fixed day one. Unfortunately this is a core component affecting all player, npc and monster collision and navigation. Which is why we need to tread carefully while dealing with these issues.