Last night I tried to put my epic tokens/shards (BtA) and my Dreaming Dark essences (also BtA) in a medium ingredients bag (exclusive, but not bound). But when I tried to put the bag in my shared bank, it gave me the message about not being able to put BtC items in the shared bank. I looked at the bag, and sure enough, it had changed to BtC even though all I had in it was epic tokens/shards and a dreaming dark essence.
I checked the known issues thread and did not see this listed anywhere. I didn't see it anywhere else on the forums either. I was just wanting to know if I am the only one having this problem or if it is widespread.