Gremlins lot trait breaks unbreakable objects... and breaks them

Lot trait 'Gremlins' breaks all 'breakable' objects on lot, as it describes in its tool tip.
It, however, also breaks unbreakable objects like 'Sweet Escapes Country Toilet' and objects upgraded to "Unbreakable'.
 These said items are broken, they cannot be repaired. Your sim will 'repair' them endlessly and will still grant skill... but the item never gets repaired.
(Had the sim repair it, and left to get a sandwich... and the poor guy was still repairing away when I got back.)

You can only replace them... which is very inconvenient if the object is expensive and fully upgraded.