Couldn´t get hit by enemys in Bossarena

Issue Type (Required):

Player Mechanics

Issue Description (Required):

Hi
no mods or anything, on steam, pc

i joined a game via quickplay. my class was victor warrior priest, the map skittergate and 3 other random people. When i joined my body spawned in the first bossarena ( to get key) as downed member.

First boss and way to the last boss went normal and i could take damage.

as we fought last boss i noticed that i didnt get damage from the miniguns. the other 3 all did get damage.
then is stoped moving and stoped blocking, rats surrounded me tring to hit me but seamed to hit the air. when i blocked the took my shilds but could still not damage me, the others could get damage.
do not use 3rd party tools or any mods, first time for me
after the map i joined another quickplay lobby and i could get damage again
is something like this known ?
any logs needed ?

Can confirm and Ironbreaker I played with had the same fun, invulnerable in end arena. Not my logs so its anecdotal but IB was definitely impossible to kill.