Input.JoystickNames() clears when any joystick is disconnected [IsBug ? new BugReport() : null]

Hello,

So in Unity 5.6.0f3 on Mac OS X when multiple joysticks are connected and a single one is disconnected, Input.JoystickNames() returns a length of 0 for 1 frame and then repopulates with the correct Joysticks that were never disconnected in the first place.

Example
Frame 1 Connected: Xbox One, Ds4 -> Input.JoystickNames().Length = 2
Frame 2 Disconnected: Ds4
Frame 3 Reported By Unity: Input.JoystickNames().Length = 0
Frame 4 Connected: Xbox One -> Input.JoystickNames().Length = 1

Is this happening to anyone else..?

I have a loop running a Coroutine with yield return EndOfFrame <- Cached

Based off the Execution Order noted by Unity this should not matter but I am just trying to rule out a flaw in my logic vs Unity bug. Also this same logic I have used in 4.X and had no problem.