Fate bugged?

Hello I'm just posting because I discovered something that feels like an exploit.
I was doing the FATE "Breaching North Gate" and when the boss type sahagin appeared, I was getting destroyed so i went past the gate and while he looses all aggro on me, it's being taken by the friendly NPCs in the FATE. Where I see the problem is that once i loose that aggro, I can come back and attack at full force and will not take the hate from the NPCs, when normally I take hate in like 5 attacks. I was wondering if this is working as intended or an actual exploit, so I can avoid doing so?

Thank you Redvulcan for posting your concerns about manipulating the boss to change aggro. I have made sure to submit all of your information to the development team, and they will thoroughly investigate this matter, based on your report. Unfortunately, I cannot guarantee that a direct response will be posted on this thread, but I do recommend checking Here or Here for any details regarding the development team's investigation.

Thanks for your report. Good luck and have fun!