I've got several items, I think many of them are listed, I'll compile them when I have time. Just from quickly skimming though I didn't see these.
In the Sims 3, lights snapped to fence posts. They do not in Sims 4 at, least not on the little fence I used for Contemporary Chateau. I would like to see this return as this is a kind of a bummer.
Why does the design tool not work on every item that comes with a set of swatches, like stairs and wall coverings? It's annoying when you want to go back and change the color on a set of stairs, but since the design tool won't work on them you have to delete them, go back and find the stairs from the menu, then replace them in the new color. It would be much more efficient and simple if the design tool would just apply to them in the first place.
Wall coverings with trims: I have a like-hate relationship with the auto placement of wall trims. It's cool and saves some time when your using that wall covering in a conventional/as intended manner, but lame and limiting when you want to use that wall cover in a more creative, unconventional manner. It would be nice if there was a way to place where you want the wall trims to be manually.
Several of the windows and doors are glitched, where the color swatch applies to the outside of the door/window, but not to the inside. It just stays all white on the inside. This is annoying when color choices are really limited to begin with.
That's it for now.