Amazon Fire TV - Input.GetJoystickNames() not enumerating the remote

We are using Unity 5.0.1f1 to create a multi-platform game. To get input into the game for platforms not supporting touch screen, I'm using Unity's Input.GetJoystickNames() API. However, I'm seeing that Input.GetJoystickNames() no longer seems to return anything for the Amazon Fire TV Remote. I do get a value for the Amazon Fire Game Controller. This API used to work in Unity 4.6.x (We've since upgraded to Unity 5). I need to use this API in order to know which controller(s) are currently attached so that I can dynamically assign button and axis mappings (since not all controllers have the same mappings).

I haven't checked yet to see if there is a 'default mapping' for the Amazon Fire TV Remote (for example, is joystick 1 button 0 always the center button, even though the remote doesn't appear to be enumerated by Input.GetJoystickNames() ? ). Even if that's the case, our game can't make the assumption that joystick 1 button 0 will always map to the right button for all platforms (hopefully that makes sense).

Is anyone else seeing something like this with the Fire TV Remote and Unity 5?

=Dan