Guild Wars 2

So we spent 4 hours doing Arah p4, and got stuck at this boss. We lured sparks but she kept on healing, and always retreat when she’s at 50% and not 25% as it should be.
5 members, dedicated their time to do the dungeon and eventually all quit because it is impossible to make…
It is not “okay” for us to spend that much time and for nothing.. so please fix this bug and if we can get that path completed we would be grateful.

Yeah i got 6 characters and those are the names:
1- Jon Gar
2- Moe Nechro
3- Fire Moe
4- Ice Moe
5- Brutal Moe
6- N A Zi

Most probably i got suspended for the N A Zi name for a reason, the name in my language means nothing bad, most probably it had been interpreted in the wrong way… hope someone can receive my appeal and help me as soon as possible, Thanks

Just tried it now, still bugged