[MOO RELATED] Sims prepare Food Inside Microwave/Counter Appliances/Sink

@crinrictbigbrainplays In my case I experienced this with a 'Bread Box of Holding' as well as with a microwave. Both in premade houses, in which said objects were placed with the Move Objects command. In the end, what worked for me was replacing the object with a new one. It seemed as if the previous object had become sort of like an empty decorative shell (in which things/or the sim would go through as if it weren't there) rather than a solid workable object.