If you were to go to the right forums → Bug report:
You would’ve seen this thread:
There you can see:
Why are you being disrespectful to people trying to explain to you that this is the correct mechanic for the boss?
How can you prevent dying to this:
Have your warrior tank (or any warrior for that matter) to stay closer to Al’ar when it reborn after the meteor, and quickly intervene whomever is its target. The raid has to stay closer, of course.