Sims constantly resetting at the changing table.

I keep getting Last Exceptions related to the changing table, and I see my Sim visually glitch and reset near the end of every diaper change. At first, I thought it was tied to my daycare business, because when I started this new game it wasn’t happening. But it’s started happening in this new save too, where I just have my Sims at home with no business. Also, were diapers supposed to automatically go in the trash if one is attached or placed beside the table? Because if so, that’s not working either. 

(note: I only put mccc in to get an easier to understand LE log; I haven't been playing with mods otherwise)