Thanks for your report. I don't have an Xbox one controller in order to try but I'll see if I can do something about that. For the d-pad, is it some or all the directions that are not detected?
Doesn't seem to detect any direction on the D-Pad. But since the analog sticks work, it's not such a big problem.
All right. Omeganaut is meant to be played with the Analog stick, while D-pad detection is mostly used for retro 8bitdo gamepads.