I am having problems trying to find a picture showing the anatomy of a fig stem/cutting. I wanted to provide this to suggest a way to determine if this is potted upside down.
Basically, if my memory is working like it should, your buds should be above the leaf scar, and above the node. So, when the plant is budding and sending shoots, check to see if your buds are above the leaf scar and node. Alternately, look at old growth. If stems occured under the line of the leaf node, then I would suspect this is actually planted upside down.