I was trying wander AI code with a unit and it keeps getting stuck at edges of an obstacle.
Upon using Debug.Drawline, the lines show that the blue destination circle is on top/below a unwalkable node. Since it is a valid path, IsPathPossible returns true.
How do I setup my grid graph so that only the roads are walkable in an enclosed city for example? When a node is unwalkable, the entire height is unwalkable.