В процессе New balance - Zombie Boss on Lost Brother dungeon

[Tulipanek]

As you can see in those videos, this zombie boss releases wave of swarm every single time he gets hit
Also even when Hubaxis gets hit, we receive all the debuffs

There's savefile
https://drive.google.com/file/d/1ekXabtM1WlIUKc-DBspTh32WgYJiTMfq/view?usp=sharing