The cannons in the Galakras encounter sometimes just don’t work. I’ve had this happen on occasion, but today it happened a lot. I had to shoot Galakras about 15 times before a single shot registered on him, and then I had to shoot him 8 more times before Zaela fell off. When this happens, the projectile will just freeze in place instead of exploding when it hits something, but then an explosion will happen about 20 yards behind what it hit, as if the projectile passed right through the target without touching it.