No idea what caused this, but here's some information that may or may not be useful: -My weapons were the homing shot and the peashooter -I rolled 2,3,3,2,2,3 -King Dice had already sent out one line of cards -I used the first super on him and took damage by falling on the cards -This was normal difficulty

odd I haven't ever seen this before

was it something like this: https://www.speedrun.com/cuphead/thread/90x6c ?

It happened again. This time I couldn't get a KO

the reason you cant get a KO there is because it stops you from damaging them any further when they start transitioning into third phase. it locks their health, but when you roll the slots it unlocks it again.