When using IL2CPP backend for OSX standalone Player, all input from Xbox controllers seems to be mapped incorrectly.
This happens to both Xbox One and 360 controller.

Repro:
1. Download project and package at: https://github.com/Unity-Technologies/InputSystem
2. Build Input_Test scene in IL2CPP on OSX (Assets -> QA -> Input_Test -> Scenes)
3. Choose Xbox and observe

Actual: Most inputs from Xbox controller is not mapped correctly.

Note: ONLY on OSX. Not on Windows.