I have a bluetooth Xbox One Wireless controller hooked up to my mac and the controls seem strange. The xbox guide button acts like the A button, and the left bumper is like the keyboard X button and other weirdness. The left analog stick does seem to work as expected. I wasn't sure if this was a bug or something with my setup, so I tried the Steam version and got the same results.
I wasn't sure where to file a bug report if so.
Love the game, though, so far it has a really strong Nintendo-esque vibe, well done!