Infants who are physically on a playmat are not recognized as being on it

When an infant is put on a playmat, they will stay physically on the playmat, but the game will act as if they aren't. When clicking on the playmat, it will display the options like "Get Carried Here" (Infant) or "Carry Infant Here" (Caregiver) even though they are still on it. This doesn't always happen, and I'm not sure exactly what causes it, but I have noticed it seems to happen whenever the infant wakes up from sleeping on the playmat. It can be fixed by pressing "Get Carried Here" as your adult sim will just pick them up, then place them back down in the same spot, and the game will register the infant as on the playmat again.