What is up with the Seabeards in Tormenta?

[Li Wildtimbers]

I don't know if anyone else has had this problem or not, but why is it every time I have gone to Tormenta with a fellow guild member, the seabeards are splitting into two. The past few times, I will be fighting a Seabeard and almost have it dead, it decides to SPLIT into two. Instead of fighting one Seabeard, I am fighting with two of them. The second always appears to be glitched and in the air. It is the one in the air that gets me every time. I dont mind fighting two of them, I just hav issues when it splits itself. None of the others there do it, so why is it just the Seabeards? Can anyone explain this to me.