Custom input module stops working in Unity 5.5 when Cursor lock state is set to locked.

To reproduce:

1. Open example in Unity 5.4.3f1
2. Enter play mode.
3. Hover the cursor over one of the cubes.

Looking at any of the cubes will turn that cube red.

4. Repeat these steps with Unity 5.5.0f3

Moving the mouse still works, but when hovering over cubes they stay white.

Note: When replacing line 17 in CameraControl script with these lines:

Cursor.lockState = CursorLockMode.Confined;
Cursor.visible = false;

The problem seems to disappear.
Project is attached to this letter.

Reproduces with: 5.5.0f3; 5.6.0a6
Doesn't reproduce with: 5.4.3f1; 5.4.2f2; 5.4.1f1; 5.4.0f3; 5.3.0f4;