Order 66 Raid - Enemies immediately dispel marked and gain stealth?

First time doing Order 66 Raid since the new update. Took Bad Batch in on several different tiers from R5 required down. Everytime I inflict marked on Fox or any of the enemies, they immediately dispel marked and gain stealth.

I've read through the kits and I don't think this is mentioned anywhere and this never happened in my previous attempts before the latest update. I believe Marked should be staying on the DS clones on the enemy team. This makes BB pretty much useless now if this is working as intended...