Trial of Sekhema Multiplayer (on PC)

Was doing a run of Trial of Sekhema for 3rd ascendancy with 2 others (one of them was host) and one person dropped dead during the Terracotta soldiers boss, while still having full HP and was not out of honor, then in the 3rd floor the same thing happened to myself where I suddenly fell over after blocking a hit, full HP, full ES and 1100 honour remaining.

https://imgur.com/a/pqNY7Ec

I am having a similar issue for multiplayer for the 3rd Trial of Sekhema. Party members will randomly take chunks of 300-500 damage despite no mobs/traps in sight. lost 700 HP in one chunk after standing still for 30 seconds. I hope this is not intentional of the honour mechanic because it isn't displayed.