Water breaking when sims are in labor?

So I've noticed there is a puddle on the ground the past couple times my sim has gone into labor. She has the steel bladder reward and doesn't have low bladder motive when this happens so I assume it is supposed to be her water breaking? I also saw it happen to her daughter when she and her husband were over for a party. Is this something that is patched in? Has anyone else had this in their game?

I ask cuz I'm pretty sure this hasn't happened until recently