On my EU account (NA works fine) I have a favorite card back selected as default, but when I play games I get a random card back. I can see all my old decks have been set to Random with Favorites Only unchecked. The problem is this is my Arena-only account so I don’t know how to get it to work on Arena decks I make. Again, I only have this problem on EU, not NA. Have tried the scan and fix game files.
i was searching for this as well, but you have to pick card back for EACH deck now. took me a while to find it also