If you're playing the Switch version of New Super Mario Bros U., you might have noticed that the jump button doubles as the mid-air spin-twist move.  If that's messing up your game, it's possible to turn it off!  On the title screen, hold in the left joystick for a few seconds.  If you hear Nabbit shout, then the jump button will only work for jumping!  You can still spin-twist in mid-air, but your jump button is free!