Hello there!

I've tested this twice & while playing I've noticed that the player who enters the final boss arena with the Geneseed will continuously be targeted by the AI until it goes down. Neither the boss or mob will switch over to other players while the Geneseed is carried. Once he was downed & lost the Geneseed then everything went to normal & all the other players were randomly targeted by the boss/mob. In my 2nd game, neither of the players entered the arena without any Geneseed on us & the boss/mob acted like normal.

I can confirm this, the boss can target others but 80% of the time its targeting the geneseed carrier, its unfair.