Pathfinding Bug? pf just dont apply AgentRadius on all waypoints

You can write your topic however you want, but you need to answer these questions:

  1. What do you want to achieve? Keep it simple and clear!

i want to apply pathfinding on my npc

  1. What is the issue? Include screenshots / videos if possible!

pathfinding is just bad, i set the AgentRadius at 3 but it seems to get that only on the last corner
image

this is good:
image

after walk on some waypoints and update the pathfinding every waypoint i get this:
image

i am testing pf on this scene:


is just a big block on the terrain

plshelp