Multiple GameCube Controllers

[YoshiFlutterJump]

Hi, I checked out your app today and it's really cool! I recently got a set of four GameCube controllers, and was looking forward to playing Mario Party 2 with them. Unfortunately, it seems that, while the app detected all four controllers plugged into the adapter, when I booted up the actual game it only recognized the controller in the P1 slot. The VC Menu let me remap controls for the other controllers as it knew they were connected, but no inputs worked on any controller besides P1. I was able to start a 3-person match using one GameCube controller, one Switch Pro, and the GamePad, but it seems that multiple GameCube controllers plugged into the same adapter does not work.