I have/had this issue on my single player map. I went to the trash location in the reddit pictures and there was about 400 hog and apple bits. Cleared it out and it looks to be solved.
I did open my single player map up, but that was way back during the EA period.
I also noticed that the black ants keep hauling hog and apple bits even after clearing them out. So I built a few grass walls to "stop" them for now. Will see if that helps deter them from hoarding so much food.