I've noticed on a handful of my SDBs that the "Deposit" menu verb is constantly available (i.e. not greyed-out), even when I have nothing to deposit.
My eggs SDB is like this. Clicking the box shows Deposit as an option even when I have no eggs in my inventory to deposit.
Is there any fix for this? I've noticed it for a while now. Changing out SDBs doesn't seem to work... or maybe I just have a lot of buggy SDBs.