This is a bug that existed in the complete collection even before legacy collection was released. If you are in buy mode (by category) you have to go to decor and go to the "show all" infinity symbol to find it. It's not under a subcategory.
This is new to me, but according to Bluegayle if you go to buy mode (by room type) you can go to outdoor and decor and it will show up.
So buy mode (room type) works as intended, but buy mode (by category) has the scarecrow as a decor object with no subcategory, so it falsely does not appear in sculptures. You have to show all.
This is a bug that should be fixed easily.
utopian569Maybe you can change the title of your post to say that this is a bug report for buy mode scarecrow? Would be nice to get this fixed.