Hullbreaker (Hard) parsing bug

Hello, we’ve been running some 4mans for logging fun and we’ve had this happen in here and another dungeon previously. First we thought my ACT bugged but now that this happens almost every pull in Hullbreaker Isle (Hard), i assume it’s something wrong on logs’ end.
Out of 4 times (deleted, but i still have them) , 3 times it shows up as Reset instead of Kill. I assume this is related to how the boss changes name towards the end to Mistbeard, but you know better.