Migrated bug from GitHub: https://github.com/Unity-Technologies/InputSystem/issues/190

From forum: https://forum.unity.com/threads/gamepad-joystick-movement-question.542629/#post-3578461
"So it seems like after grabbing that update, in order to save changes to my controls asset, I have to click Save and then focus a window other than Unity and then back to Unity. Otherwise I lose my changes when I close the asset editor."