When I queue up actions starting with sowing and ending with a harvesting action, IE: Sowing, Sowing, Harvesting, the harvesting action is never carried out. I have only experienced this with harvesting being the action following sowing and have not tried it with other actions. This was noticed after the 10/31/2013 update. My exact actions were to sow a garlic/pumpkin seed and then harvesting a pumpkin/garlic tile, and would happen after any number of sowing actions queued. All of these actions are also performed using key binds.