Sims Carrying Trash / Plates / Laundry / Infants Reset With Stairs / Platforms

Same here, tho I don't have any platforms in my current house. I've not been on Sims 4 for a couple of weeks as I was visiting Sims 2 but I have noticed that Sims will pick up trash and randomly drop it usually after 2/3 steps then with a bin speech bubble but there's a very usable one nearby and outside . They're not a slob or have any lazy traits, in fact the Sim I noticed it on had the neat trait