Yea i mentioned it in the game page
Viewing post in ribbons (demo) jam comments
Ah, I see -- thanks! Yeah it's a very weird bug with Unity's input system :\ some people have gotten it to work some haven't. I think someone mentioned being able to get it to work by plugging in a controller and unplugging it, but I haven't verified that yet.
Once the jam is over, we'll be sure to squash this bug 4ever