I got two copies of each of the Goldens after the Tavern Brawl. If I try to de the extras, either manually or using the auto-dust, it gives a System Error.
I assume the extras aren’t really there, but the error on dusting is annoying.
Did anyone else get this?
The bug is that the Card Collection shows two awards of Golden Bronze Herald or Golden Recurring Villain.
Unfortunately, this is a double award visual glitch. You only get one of each Golden card.
The workaround is to restart Hearthstone.
This has been reported and in future when you do find a game bug: