To reproduce:

1.Download and open attached project.
2.Look at the center position of the drawn gizmo.
3.Select Main Camera object and check it's transform position

Expected result: Main Camera's and Gizmo's center position being the same.
Actual result: Gizmo's center position is always at (0,0,0) in world coordinates.

Reproduced with: 5.6.0b2, 5.6.0b3, 5.5.0p4, 5.4.4f1, 5.3.7p2.

Note: Gizmos should be drawn from the same exact point where the camera's transform is. In the Editor folder, there is DrawCameraFrustumGizmos.cs script which is responsible for drawing Gizmos.