Hi, thanks for contacting us!
That's strange, could you please tell us some more info? Like what OS are you using, or what model is your XBox controller? Is it a wired one?
When using an Xbox controller it should work directly just fine, but if it doesn't you can always emulate the keyboard using AntiMicro (https://github.com/AntiMicro/antimicro) or AntiMicroX (https://github.com/AntiMicroX/antimicrox).
Please let us know if you could solve the problem.