I was practicing against steel maggot and hit one of the wrong buttons :( I tried to hit steel maggot again as it was firing it's projectiles thinking that's when the buttons reset, but after I hit it, it didn't fire at all. This is the first time I've seen this happen and it's certainly not something I knew about, so on the off-chance anyone is interested here's the footage.

(I hope this helps someone fight bad maggot RNG).