Yeah so I hit this too when I finally decided to go check out that island.
My main character has literally been charmed the entire fight, every 2 seconds I have Pallegina hit her to break the charm and immediately after she gets charmed again. It's extremely stupid, honestly, which is why I assumed it was a bug and looked for this thread.
I didn't see a reason why it would only happen to my main character, but based on responses here it might be because I keep having her use Rogue abilities to damage and interrupt (she's a Swashbuckler, every active rogue ability interrupts). If every interrupt on these guys dominates, not only is that pretty stupid mechanically, but it also means that Rogues are a liability since all their active abilities interrupt.
I'm not even sure if it's the interrupt, but whatever it is it's extremely stupid. I just tried replaying the fight to try to figure out what's happening and on the very first auto-attack out of stealth my rogue was dominated. Right now it just seems like a massive "**** you" to my rogue in particular since none of my other characters have this happen.
Hah, yeah, so I break the charm above, go to hit another Fampyr (who is currently Terrified and can't do anything) hit it with Penetrating Strike (so no interrupt component) and immediately get charmed. Don't even get the Full Attack off. Super stupid and broken, I'm not gonna bother with this fight on other runs until this is fixed I think. I don't mind being charmed once in a while, it's what Fampyrs do, but making my Rogue completely useless every time she attacks is not fun.
If you guys want a save file let me know, it seems like on this character every single melee attack by my Rogue gets her charmed. Or maybe it's just proximity, I have no idea, I just broke it again and as soon as I targeted the (still Terrified) Fampyr she got dominated again, it's actually kind of funny at this point.
I went ahead and uploaded a save right before fighting them, why not. To repro just try fighting them and watch the Rogue constantly get dominated (well, charmed as long as Pallegina's chant is on).
Edited by Answermancer, 10 June 2018 - 02:50 PM.