Does anyone else have Sims walking through walls since yesterday's update?

I have not patched my game since CoL release, and some sims walk through walls and objects. They obviously have routing issues as they slow down and nearly just about slide instead of walking, though, so maybe this is something totally different from what you see. When it happens (not often, so I don't really mind) there will typically be another sim getting in their way. I don't know when this started but it must have been minimum 3-4 months.