Tempest Roar Drop issue (dont know where to post so support actually reads it)

Good evening, the issue is the next.

I spent probably around 15h of my playtime in this season farming mats and killing Duriel and Andariel to get a tempest roar, i made around 30 kills together, and now a streamer just said that Tempest Roar have issues with the drop, so big question is, what happens now to the materials i wasted doing nothing? I used all the mats from season journey plus farming etc for nothing cause theres a bug that i cannot know about, for sure you will have respect for players time and devolve the materials or guarante a tempest roar i´m not sure whats the solution but right now im more frustrated than i can describe cause i wasted all this time for nothing and i dont want to play the game. I dont think its fair for me, and other players that might have done the same thing.

According to some Druid streamers, this bug have existed since PTR test that Tempest Roar (wolf helmet) does not drop from Duriel or Andariel.
Blizzard seems removed helmets from drop list of these two ubers (except Harlequin). I’ve killed Duriel for plenty times and already got 7-8 Tibault and Dolmen Stone but 0 Tempest so far, even 0 Godslayer Crown. The other druid players have exact same issue with Tempest drop.
No idea when they are going to fix this “bug” or not.