Breakable Objects can't be repaired (endless repairing)

This is happening to me with all unbreakable and self-cleaning appliances after they get gnomed. My sim is living in an apartment with the gnome lot trait, and when the evil gnomes break/ dirty the appliances they result in the endless repair and cleaning. I've experienced this both with the appliances that came with the apartment, as well as appliances in which I've added the upgrades to myself. Unfortunately, even hiring a repairperson does nothing.