"Consolidate" feature showing additional cards

Hi,

I'm not sure if I'm missing here, but when I check the consolidate option in my collection, my total collection size goes up and it seems to show more copies for some cards than I actually have. For instance, I have a total of one War-Lion Ritual in my collection, but when I hit consolidate, it suddenly shows two. Then when I try to remove one, it goes to zero.

Edit: Removing it and re-adding it seems to have fixed the issue for this one card in particular, though it didn't when I tried yesterday.