I was filling orders this morning, Sunday 06/23/13, and I filled all vanilla bean orders in the GW2 gathering section. I clicked the link for vanilla beans when I had finished and there were 5 orders for stacks of 50 from leselyn.7902 showing on the Item description page but they did not appear in the gathering section of the marketplace for GW2.
I have these orders claimed, but not yet filled, if you would like to take a look at them.