[poe 2] Zarokh one shot bug

I removed this much hp from zarokh https://i.gyazo.com/09ebce11d0f5ae7b7473c78b27656ca9.jpg

after that he cast sands of time 2x in a row. i completed the first puzzle, the second however was instantly ended by the boss and he one shot me.

i assume this is because on the second sands of time, it assume that i'm still on my first puzzle so I had less time to solve it (which was literally miliseconds)