A new glitch has been discovered in Smash Bros. Ultimate, and it is bad enough to crash the game. When selecting a stage, if you press the Y button on any battlefield stage to play any song, then pause the song and select "all", the music will stop. After this, select a stage and the game will crash. Obviously a very specific set of steps, but it still results in a crash. Expect this one to be fixed soon.
Crashing the boys