while playing in the sims 4 I've noticed that the snowmen and snow angels won't melt in the neighborhood. So far it doesn't affect gameplay, but it is very strange to see snowmen, etc, during a heat...
Ideas
There's an older AHQ thread for leaf piles here: https://answers.ea.com/t5/Bug-Reports/S-Leaf-Piles-Not-Disappearing-Patch-1-71-1-38/td-p/10119269 and do think I saw snowmen reported somewhere before.
Did you get these in any world ?