Applying Tormented Dreadwing’s deathrattle onto Adaptive Amalgam using Death Growl works differently than it used to, presumably a bug.
Before, after applying the deathrattle, when the amalgam died on board it would draw itself (if it’s the only dragon in your deck after shuffling back in) on the first death and all subsequent deaths.
Now, for whatever reason, it will not draw itself the first time, but it will draw itself every time it dies after that.