Hearthpwn

So, recently i realized that my Naxxramax, BM and League of Explorer cardbacks are missing from my collection. Why? I used to have them all and I completed every heroic adventure!!! It's this a bug??? What happened. Naxxramas cardback for me is the best and my favourite...

I just checked, and all my heroic card backs are still there. Looks like it may be a bug.

I would try to restart the game. Or, if you can, look at it on another platform. 

Next option is to contact Blizz, I guess.

Good Luck!

Yeah, I did that already. Also forgot to mention that. Still them missing

Same problem here. I had completed Nax and BM in heroic a long time ago. Checked today and found the card backs greyed out...

Any solution yet?

Mine too disappeared and I'd really love to see them back as heroic naxxramas is the most awesome card back :D

OK, the solution was easier than expected. Got it from here but it's basically what ChWolfgang suggested:

• Close Hearthstone.
• Log out in the Blizzard Launcher.
• Log in again.
• Start Hearthstone.

My heroic card backs are back now! :-)

Funny enough, I had this issue a few days ago myself. Same solution worked. Such an odd error.

I suppose as bugs go it's not the most annoying but still got to waste a few minutes logging out each time!