Since the launch of Darkmoon Faire, the no duplicate card feature appears to have stopped working for me. There was some sort of error that caused me to Disenchant a few more Cards than intended, mostly Commons and Rares. I figured it wouldn’t matter much since I’d just get them in the first couple of packs I bought.
But it’s been a while now and I’m still missing those cards despite having all other cards.
This affects the latest two expansions.
My personal guess that it’s a database error probably caused by the sheer amounts of calls on release day but it’s clearly something I can’t fix on my end.