NavMeshLink don't work in correctly in certain area

Hi, I'm using NavMeshAgent and NavMeshLink for my AI's to pounce to enemy position ( I know I could use other way but actually I liked the way NavMeshLink do it). The problem is that it works perfectly in for example, Position z : 0 -20. X don't matter and Y either. So, in this position the AI would go to the Link if the destination is over a building, or even if it's surface,the link just make the path faster.

Now,if the Link is over for example,Z : 20. The AI won't never do this faster Link path. Can link to buildings but not to the surface like before. Anybody know why does this happens and how to fix it? Took me so much hours and still didn't resolve it yet.