Since the pre Parenthood patch the vendor table at the Flea Market does not have any items. Neither table can be stocked by my Sims. I have mods and cc, which I have removed, but nothing has changed.
I have also noticed this in my game since the Parenthood patch as well - all the times I have visited the Flea Market since the patch, the vendor sim is there, but they aren't stocking the table or selling with it.
I haven't tried having one of my playable sims use the tables yet.
EDIT: Here's a local artist sim standing by a painting vendor wall in the Arts District. In the past, she has sold paintings before, but now she just stands beside it and doesn't stock it with paintings for sale. Even after she left, replacement arty sims also stood beside it not selling anything. This is the painting wall that appears on random days in the neighbourhood in the arts district. It doesn't seem to be just the festival that is affected, but anywhere there's a vendor/sale object.
