To reproduce:
1. Open attached project;
2. Open "ImportScene";
3. Enter Play Mode;
4. Press the top region of the HTC Vive controller thumbpad.

Expected result: No errors are thrown in NavMesh.SamplePosition
Actual result: Errors "Invalid AABB aabb" and "Invalid AABB result" are thrown in the Console.

Note: if you comment out Debug.Log(Application.buildGUID) in the Assets > Scripts > Log Manager.cs:44 and Mesh.RecalculateTangents() in Assets > Scripts > ColorModder.cs:236, there will be no error thrown.

Reproduced on versions: 5.6.2p2, 5.6.3p3, 2017.1.1p2, 2017.2.0b11, 2017.3.0a7.

By design: the code works as expected. A bad value is passed from user code.