I just got back from holiday and installed the latest patch Friday. During Spring, my Sim burned the leaf pile in the vacant area near the house and all the leaves near her fishing hole, and not only did they not come back until Autumn (when you would expect them to return), but I've seen NPCs collecting the ash piles in garbage bags.
I don't have any mods or cc, so I think the perpetually regenerating leaf pile bug might be fixed? (Crossing fingers - it's almost winter, and I'm waiting to burn the leaf piles again in the hopes that they'll be gone until next Autumn.)