Jamanra Sandstorm Critical Bug

Idk if this has been reported before, but I'm really annoyed bc I just had a Copper Citadel bricked on me thanks to a fatal bug/issue with the Jamanra fight. I had no way to escape from his sandstorm bc Asala didn't put up her barrier in time, not even close... It was only after I was dead that she decided to start running to put up the shield, which was about 8sec of the sandstorm hitting me with no way to stop it...

I suspect that this has something to do with the ol' "Killing the boss to quickly" issue that so many games have, the only problem with that theory is that I've done at least 5 other Copper Citadels by now on this char, and I was just as strong then as I am now.

Imo this mechanic of the fight needs to be removed completely, it's annoying af and I shouldn't have to worry about my exp and citadel rewards being stolen from me just bc of a stupid NPC not doing their job... I'm currently lvl 94 and I just lost many hours of my time from no fault of my own. Please fix this.