Try refreshing custom assets. If that doesn't work, see if the "use" prompt is on the rugs/posters when you set them down. The updates over time added the function to have more custom assets, and allows you to select which one to use for that dedicated custom asset.
If those methods don't work, it may have been an update failsafe, and they might not be custom anymore. The only thing I can suggest at that point is just to buy new custom items, and re-apply them.