I used the "Buy XXXX Crowns" option in the energy tab. I lost 100 CE, and got NO money. Tried again, and much to my surprise,
it happened again.

EDIT: I relogged and there were my crowns. The bug is actually me not even getting them until after I relogged. I could not purchase anything with my invisible crowns, they were just waiting for me. That inspired me to rage on the forums.