Gap on tile border?

General Recast graph
5

I wrote it myself, but basically I use the API.

...
                if (isXZ)
                {
                    newPos = curNode.ClosestPointOnNodeXZ(endPos);
                    newPos.y = endPos.y;
                }
                else
                {
                    newPos = curNode.ClosestPointOnNode(endPos);
                }
...
        NNConstraint contraint;
        if (isXZ)
        {
            contraint = NavmeshConstant.CONSTRAINT_XZ;
        }
        else
        {
            contraint = NavmeshConstant.CONSTRAINT_NONE;
        }
        NNInfo info = AstarPath.active.GetNearest(pos, contraint);
...