We’re on the - what, 4th island challenge? - by now, and this still hasn’t been resolved so I imagine it’s unlikely to.
But just flagging it anyway in case the devs aren’t aware - the seconds from a stun absorb are completely out of whack with regular battles and rather illogical. A regular 80s stun entrance/revenge will be absorbed for 240s in a regular battle in any other challenge, but in island challenge the stun absorber gets hit for over 700s. It means any stun whatsoever effectively puts your stun absorber out for the entirety of the battle. Given the stun should only hit for a total of 320s, I can’t for the life of me work out how it’s stunning for such an insane amount.