Visiting unplayed household with Sim at work has unexpected effect

to avoid confusing other readers, the visited Sim is not at work as the title states. the issue is, just like you said, when they have to leave for work.

the household i am testing again, there is a YA and a toddler. the YA works as a Writer. this time the Sim has left for work, leaving my visiting Sim alone with the toddler, and returned on time. this is strange...