And some weird severe-but-short-term economic volatility.
Something along the lines of:
Now nobody is picking fruits, all the fruits die on the tree/vine, so there's none of that in the supermarket and those farms go bankrupt. Also, most of those who were paid to butcher the cattle are gone, but the cows are still there, costing the farmers money, so those farms go bankrupt. And then so do the feed suppliers for cattle farmers that don't ranch (or do but need extra feed besides the grass). But everyone still needs to eat, which means there's correspondingly more demand for the stuff which is heavily mechanised, so prices for that go way up, but because this is an instant supply shock the average person is still hungry no matter what the prices are, unless the humans start eating alfalfa en-masse.
Something along the lines of:
Now nobody is picking fruits, all the fruits die on the tree/vine, so there's none of that in the supermarket and those farms go bankrupt. Also, most of those who were paid to butcher the cattle are gone, but the cows are still there, costing the farmers money, so those farms go bankrupt. And then so do the feed suppliers for cattle farmers that don't ranch (or do but need extra feed besides the grass). But everyone still needs to eat, which means there's correspondingly more demand for the stuff which is heavily mechanised, so prices for that go way up, but because this is an instant supply shock the average person is still hungry no matter what the prices are, unless the humans start eating alfalfa en-masse.