Ok so I checked mine and under Device Manager -> Human Interface Devices it looks like both my Xbox controllers are detected as bluetooth XINPUT compatible input device, screenshot of driver details attached. Not sure if this makes any difference?
System is Windows 10 Ent, Latest OS build and current with updates. i5 8600K, Asus MITX ROG 370 mainboard with 16gb DDR4 3200, Samsung 960 512gb NVME Pro as OS drive, Samsung NVME 500gb as secondary drive.