its not on the players, blizz just stop being retarded and remove/refund the items. Its not a hard fix, and entirely worth doing. Many people are playing this game just for arena, its absurd they would allow unfair/unjustified advantage because of a bug. This for me will show if they care even 1% about the players.
It is quite amusing that we had some of the same bugs that private servers have (and fixed), like “Deathblow to the legion” quest bugging out for the entire server until restart.