Stacks with 0 stars can't be thrown away. Is this a bug?

Nothing happens when I double click the perfume. The item itself probably also needs fixing.

Thanks boggart. The Lv26+ versions of 'Defeating the Hidden Monster' were missing, and Cassandra now offers one for every level band. The children's toys drop from monsters while you're on it. Double-clicking the perfume by itself still does nothing, as on the original servers. You're right about empty star stacks too: you'll be able to drop them or sell them at a shop in an upcoming update.

Follow-up: empty star and bullet stacks can now be thrown away. Drop one from your inventory, or sell it at any shop for the item's base price.