This is a 'Me too'. MY teen has all of her Parenthood traits reasonably high. This never happened while she was at home in Oasis Springs with her father and late grandmother and only started when she 'ran away' to Forgotten Hollow after her grandmother died. That is to say, I played many many hours over several sessions with this teen sim in Oasis Springs and it wasn't happening then. Moved her alone to Forgotten Hollow and suddenly she gets a queue of several 'wash dishes' when there are none and just stands there moving slightly either doing nothing as the queue just drops, or she cycles though what look like dishwashing thought bubbles over and over.
This happens if she does not have an assigned action for several seconds (faster than clicking something to select a task for her to do!). If she chooses some other autonomous actions like journal, homework, read, play violin, etc., she will start that task and immediately queue the dishwashing thing and stop doing the original task.