That mission definitely has some weirdness going on with it. I did it solo on one character, and it went fairly smoothly and without bugs. However, I did it on a different character alongside my husband last night, and my god, there were some serious bugs.
We ended up wiping three times on the end boss. After the first wipe things were still normal until Braham decided to open one of the rifts NEXT TO the platform we’re fighting on; Braham and the rift were floating in the air. Since it was in the air, neither of us could stand there to channel, and so we had to both die to reset.
The second time things were still mostly fine, even though I had a fail and died, leaving my husband to finish off the boss alone; he got to the end phase where you defend your party as they open the rift. However, he slipped up and died.
After we both revived and were ported back down to the fight, we noticed a rift was left open from the previous attempt. I interacted with it and, after fully channeling it, noticed it triggered the dialogue from the beginning of the fight that happens if the instance owner is a Sylvari. The rift stayed there (and remained active) throughout the remainder of our fight. We fought the first Evil Clone of Our Allies, and then the boss went from 85% health to 15% in a second. This triggered the trash mobs for the final phase, but we were also still having to fight off the second Evil Clone of Our Allies as we fought through the trash. Luckily, we were able to kill the boss that time anyway.
So yeah, SERIOUS bugs can (and do) happen.
