Thanks for playing! I'm sorry to hear that a bug messed up your experience. I noticed that bug at some point in development but never managed to quite squash it. Was it off by more than a whole beat or was the timing just inaccurate?
It was only very slightly off. For the longest time I thought I was just bad at timing the movements, until i realised it was happening consistently. But I imagine it is really hard to get exactly right, so I think it's understandable for a game jam game :-)