Score Playing Back Strange

Hey Guys

I'm playing around with a marching cadence, trying to get back into using Musescore. Suddenly, the score is playing back strangely, not playing all notes, maybe as if it is playing in a swing style. I've been picking at it on and off for a coupke days and this is the first time it has done this thusfar; so I don't know if I've just hit a shortcut I don't know about or if its something deeper. I've done what research I can do and have ensured all swing settings are off. If anyone else has had this problem or knows what I might have done, please help. The file is attached below.